Hydrostatics & stability

This tool supports learning, teaching and early design with documented analytical checks and published-hull comparisons. Approval and onboard use require an approved stability instrument (IMO MSC.1/Circ.1229, IACS UR L5); this tool does not provide that approval.

Inputs

Required a value is needed for the selected calculation; it may already be filled. Optional may stay empty or be omitted. A second tag shows the source: From example, From file, Default, or Entered. Computed and Estimated identify derived values. Check imported values and assumptions before running.

Positions and signs: x from the AP (positive forward), y from the centreplane (positive to port), z above the baseline

The frame of every position on this page (OpenNAOE convention): x from the aft perpendicular (AP), positive forward; y from the centreplane, positive to port; z above the baseline. The origin O is on the baseline, in the centreplane, at the AP. Heel φ is positive with the starboard side down, and trim t = T_A − T_F positive by the stern. This holds for x_G, y_G and KG (which is z_G), the lightship, items, tanks and openings of section 4, and the inclining weights of section 5.

Hull geometry

Example: Series 60 parent hull, C_B 0.60 Todd (1963), L_PP 121.92 m Mesh file STL or OBJ, a closed surface Table of offsets Excel or CSV recommended; image/PDF with review

The Series 60 parent hull built from Todd's published offsets, at L_PP = 121.92 m. Ready to compute.

The same hull as files (the offsets and the profile can be loaded again under Table of offsets; the configuration records the inputs of a run on it): · ·

Table of offsets required Excel (.xlsx) or CSV is recommended: it preserves the numbers and is easier to check. Images and PDFs are supported when a spreadsheet is unavailable, but extraction can misread or omit values. Review every extracted value and its coordinates before applying the table. Or drop a file here.

Layouts and labels the page reads

Stations in rows (the tool's own layout): a header naming the columns, then one row per station.

station, x,   keel_z, bottom_y, deck_z, deck_y, 0.5,  1.0,  2.0, ...
0,       0.0, 1.20,   0.00,     3.30,   5.10,     ,     , 4.32, ...
0.5,     2.5, 0.85,   0.00,     3.27,   5.35,     , 2.96, 4.81, ...

A column of positions (x, position) from the AP, or of station numbers (station, stn, st: 3, 1.5, 1/2, 1 1/2, AP, MS, FP, St 3); then one column per waterline, labelled with its height (0.5, WL 0.5, z=0.5, BL), or named WL1, WL2, … with the heights in the next row starting with z. Cells are half-breadths; an empty cell, -, or n/a means no hull there.

Optional columns give each station's section ends: keel_z (keel height), bottom_y (half-breadth at the keel), deck_z (deck at side) and deck_y (half-breadth at the deck). With them the surface follows a rising keel, a raised transom, the stem and the sheer; without them the deck is flat at the highest waterline and a profile file may give the ends.

Waterlines in rows: the same table turned round, with the stations across the top (x=12.5, St 5, or numbers) and a waterline height at the start of each row; rows labelled keel_z, bottom_y, deck_z and deck_y may follow. Points: columns x (or station), y, z, one point of a section per row.

Lines starting with # are comments; titles above the table are skipped. With semicolons or tabs, a comma between digits is a decimal comma. With the foot as the unit, 12-3-4 reads as 12 ft 3 4/8 in. Excel .xlsx files open in a worksheet review. Formula cells use their saved results; formulas are not recalculated. Save legacy .xls files as .xlsx or CSV. Images/PDFs open in an extraction review. In drawing tables, WL-1 is a waterline label: enter its actual height, not its number. Buttock columns give heights at specified distances from the centreplane.

Profile file: z, x_aft, x_fwd and optionally y_aft, y_fwd (transoms).

Unit of the offset table required

Layout default automatic required

Profile of the ends (CSV) optional

Forefoot radius (m) default 0 required

Round bilge: sections leave the flat of keel horizontally (leave off for a hard chine)

Points along the length default required

Levels per interval default required

How finely the surface is sampled: levels per interval between tabulated waterlines or, for a table with keel and deck columns, per twelfth of each section's height.

Geometry preview

Preparing the hull preview…

Ship and water

L_PP (m) required from example

B (m) required from example

Length between perpendiculars and moulded breadth; they define C_B, C_WP and MCT. For a mesh they are first taken from its extent, which is usually longer than L_PP: correct them.

Water density (t/m³) default 1.025 required Sea water 1.025, fresh water 1.000.

Waterplanes

Mean draughts T (m) required from example Separated by commas or spaces; at most 200.

Fill evenly spaced draughts

From (m) required

To (m) required

Number default 10 required

Trim t = T_A − T_F (m) default 0 required Positive by the stern. T_A and T_F are read at the perpendiculars.

Loading condition and GZ curve Compute the GZ curve, the equilibria and the criteria of MSC.267(85) Part A 2.2 for one loading condition

Displacement (t) and centre of gravity Even-keel draught (m) and centre of gravity Weights and tanks: lightship, items and tanks with free surfaces (MSC.267(85) Part B 3.1)

Displacement (t) required

KG (m) requiredCentre of gravity above the baseline, free-surface corrected.

x_G (m) optionalFrom the AP, positive forward. Blank: computed as the LCB at the condition's even-keel draught (no trim).

y_G (m) default 0 requiredFrom the centreplane, positive to port.

Filling policy default required Assessment: tanks at 98 % or more are nominally full (cargo tanks corrected at 98 %); a variable filling is assessed over its envisaged range whatever the actual filling, at the governing filling for the initial GM (largest surface inertia at 0°) and for GZ at each heel (largest moment of transfer, found by a search); the pair or single tank with the greatest effect per consumable liquid is counted at its governing filling over its range, 0 to 98 % when none is given (Part B 3.1.2 to 3.1.4).

GZ correction default required Both are computed and plotted; the one chosen gives the curve, the equilibria and the criteria.

Minimum displacement Δ_min (t) optional Only for the small-tank exemption 3.1.12, applied to the tanks marked for it: M_fs(30°)/Δ_min < 0.01 m.

Lightship required

Its mass and centre of gravity: x from the AP, y from the centreplane (positive to port), z above the baseline. The items below are given in the same way.

Mass (t)

x (m)

y (m) default 0 required

z (m)

Deadweight items optional

Name	Mass (t)	x (m)	y (m)	z (m)	Remove

Tanks optional

A tank is a box in the ship frame (x from the AP, y positive to port, z above the baseline) or a closed mesh file. Filling as a fraction of the capacity, a volume or a sounding. Category and liquid type matter in assessment mode only.

Heel angles of the GZ curve (°) default

from required

to required

step required

Free trim: at each heel the ship also trims to balance the longitudinal moment (off: the trim of section 3 is held at every heel, which may leave the longitudinal moment unbalanced; the results then say so)

Height of the deck edge (m) optional The lowest point of the deck at side above the baseline: the hull at that height, even between vertices of the mesh, and above it is taken as the deck edge for the deck-edge immersion angle and the deck clearances; with sheer the angle found is then a lower bound. Blank: the deck line of a table of offsets, or else the top of the mesh, which is too high where the deck edge is lower (sheer, a bulwark, a deckhouse); the results say which was used.

Downflooding openings optional Points that must stay above the waterline, such as ventilators or hatches, with x from the AP, y positive to port and z above the baseline; the first to immerse sets the downflooding angle, which ends the admissible range.

Cross curves KN at displacements (t) optional Separated by commas; KN at every 5° of heel, about the keel point at x_G.

Weather criterion of MSC.267(85) Part A 2.3

Compute steady-wind heel, the roll excursion and the gust-area comparison from the corrected GZ curve.

Include the weather criterion in this calculation

Applicable weather rule default general rule

Windage includes the ship and deck cargo above water. Supply it from drawings or measured geometry; underwater offsets do not determine it.

Above-water lateral area A (m²) required for weather

Wind lever Z (m) required for weatherBetween the windage centroid and the underwater lateral-area centroid, approximately half the draught below water.

Length at waterline (m) required for weather

Bilge / keel form default round

Total bilge-keel / bar-keel area Ak (m²) default 0

Natural roll period (s) optionalBlank: estimate using 2.3.4 and corrected GM.

Sources for windage, appendages and period required for weather

I have reviewed the actual deck edge, all unprotected openings and windage for this condition.

Physical KG above baseline (m) required for direct loading

For a directly entered loading condition, enter physical KG here separately from the free-surface-corrected KG used for GZ. With weights and tanks, physical KG is calculated from those weights.

The steady heel and the gust energy areas are checked separately, with the wind from each side. Outside the range of the empirical roll formula, or where the GZ curve does not cover the interval needed, the criterion is not assessed. No overall statement of compliance is made.

Inclining experiment Inclining experiment: KG and the lightship from the heel that moving known weights produces (MSC.267(85) Part B Annex 1)

Simulate it for learning: the tool computes the heel after each movement for the loading condition of section 4 and analyses those heels as if they had been measured Analyse measured readings draughts and pendulum readings from an experiment

The draughts, the displacement and KM_T come from the loading condition of section 4; the inclining weights are taken as included in that condition at their initial positions.

Inclining weights required

The mass of each weight and where it stands at the start: x from the AP, y from the centreplane (positive to port), and z, the height of its centre of gravity above the baseline.

Positions. First set on the deck near midship, inside the deck edge, close together and staggered so that a weight moved across lands on a free place. z is first the centre of the block drawn in the 3D view (its volume is the mass over the water density) standing on the deck. Where the top of the hull near midship is not one deck (a deckhouse, a trunk, a coaming or a bulwark), no position is set and the note under the table says why. Enter where your weights stand, with z at their centre of gravity; a position you type is kept.
Masses. First estimated from the condition of section 4 and shown in italics; the note under the table gives the numbers. Enter the masses of your weights.
Colours. Shades of vermilion for weights that start to port, of bluish green for those that start to starboard, beside each name and in the 3D view.
Remove a weight with the × at the end of its row. Add weight puts a new one on the side with fewer weights (P3 to port, S3 to starboard, and so on).

How many: the usual test uses four weights of nearly equal mass, two to port and two to starboard, heavy enough to heel the ship between 1° and 4° to each side; the standard sequence moves them in eight steps (the UK MCA's guidance, MSIS003 Part 6, prefers at least eight movements and accepts no fewer than six). However, to run the analysis you need at least one weight, moved across and back, which gives two readings. With weights on one side only, the ship heels to that side only.

Unit of the masses default required

Name	Mass (t)	x (m)	y (m)	z (m)	Remove

Sequence of movements default required Each port weight goes across in turn and they come back in reverse order; then the starboard weights do the same. With two weights a side: eight movements, with moments +1, +2, +1, 0, −1, −2, −1, 0 times one weight's moment (its mass times its shift). A weight on the centreline is not moved.

Pendulum length (m) default 4 required Converts deflections to tan φ; in a simulation, gives the deflection you would read.

Movements required

In the order they are made: which weight moves, and its transverse position after the move.

Weight	Moved to y (m)	Remove

Readings required

One line per movement, in order: the pendulum deflection (m, positive when the ship heels to starboard), or the angle (°), or tan φ.

Movement	Deflection (m)	Angle (°)	tan φ

Tanks with a free surface during the experiment optional

Other masses to remove to reach the lightship optional

Name	Mass (t)	x (m)	y (m)	z (m)	Remove

Remove the inclining weights to reach the lightship Remove the liquids in the tanks above as well

Masses to add optional

Name	Mass (t)	x (m)	y (m)	z (m)	Remove

Next: Analysis & results The Compute button is there.

Benchmarks & validation

The tool's results are compared here with three kinds of reference: exact solutions, which check the calculations; two real inclining tests, which check the analysis of inclining readings; and published hulls, which check how the tool reads real hull geometry and computes its hydrostatics. Each result applies to the case and conditions stated with it. Open each study for its results, comparison limits and sources.

Exact solutions

The tool is run on simple shapes whose results can be worked out exactly: the hydrostatic curves of the Wigley hull; the GZ curve to 90° of a box barge with a slack tank, and the heeling moment of the liquid in it; and an inclining experiment on the same barge. The exact values come from closed formulae or from exact polygon geometry, worked out separately from the tool, so any difference comes from the tool, including the flat facets of its mesh. In the plots, lines are exact and circles are the tool's values. The tool's browser engine is tested against the same values.

Real inclining tests

After the fishing vessel Scandies Rose was lost in 2019, the US Coast Guard Marine Safety Center re-analysed her two inclining tests, made in 1988 and 2019. Its report is a work of the US government, and the readings in each study are taken from the test sheets it reproduces. The tool fits a line to the readings of each test, as it does for any inclining experiment, and works out the lightship; its values are set beside the Center's. The hull's geometry is not public, so the displacement, KM and free-surface correction are the Center's: the comparison covers the tool's fit of the readings and the lightship calculation.

Published hulls

The tool computes the upright hydrostatics of three real hulls from their geometry, and the results are compared with the particulars their designers published at the design draught; the DTC also gives KM_T at two other draughts. A fourth study takes the hulls of the Delft Systematic Yacht Hull Series, whose geometry and hydrostatics, upright and heeled to 30° with free trim, were published together: there the tool is compared with another program over a family of hulls, heeled and trimmed. These studies test how the tool reads real hull geometry. For the three hulls, a difference within the rounding of the published value counts as agreement; the series' study counts agreement within 0.2 %. Published cross curves and inclining records are rare for hulls whose geometry may also be shared, so the GZ curves are checked on the exact shapes above.

The report has all three sections, every study in full, and the references.

About

Methods and limits

Capabilities and limits

The tool computes upright hydrostatics and, for one loading condition (given by its displacement or its even-keel draught and its centre of gravity, or by lightship, items and tanks), the GZ curve with its equilibria, cross curves and the general criteria of MSC.267(85) Part A 2.2, each checked separately with no overall verdict on compliance; the free-surface corrections of Part B 3.1; and the analysis or simulation of an inclining experiment. The weather criterion of Part A 2.3 is assessed from the windage and appendages given, once the deck edge, the openings and the windage have been confirmed, and only within the range of the Code's empirical roll formula.

Statics in calm water only: no ship motions and no damage stability. The weather criterion represents wind and rolling by the levers and the empirical roll angle of Part A 2.3. The hull mesh is taken as the watertight envelope. The results are exact for its flat facets, and they approach those of the curved surface as the facets get finer.

Method

The closed mesh is cut by the waterplane. In a frame whose third axis is normal to the waterplane, the divergence theorem gives the volume, the centre of buoyancy and the waterplane properties from the wetted faces alone; every integrand is at most quadratic over a flat face and is integrated exactly.

A table of offsets is first turned into a closed surface: a shape-preserving (monotone) cubic through each station and along each waterline, ends from the profile, and a flat deck at the highest waterline. A table that gives each station's keel and deck at side is built instead through each section from its keel to its deck at side, with the keel line and the sheer as given and no profile. The construction is versioned and recorded with each run.

Geometry

A mesh must be a closed, consistently oriented surface without self-intersections, with its faces pointing outward. It is checked before anything is computed, and a failed check says where. The checks find open, non-manifold and reversed edges, vertices where sheets meet, inverted and nested bodies, faces that cross and coplanar faces that overlap. They do not find faces that merely touch at a point or along an edge, nor a fold through a vertex shared by non-adjacent faces, and every verdict says so. STL and OBJ record neither units nor axes: state them, and check the extent shown after placement.

Conventions

OpenNAOE conventions: origin at the aft perpendicular on the baseline in the centreplane; x forward, y to port, z up; trim t = T_A − T_F, positive by the stern, and the trim angle positive bow up; heel positive with the starboard side down; Δ_m = ρ∇ in tonnes and Δ = ρg∇ in kN, with g = 9.81 m/s²; masses in tonnes, moments of masses in t·m. In the hydrostatic table MCT 1 cm uses BM_L in place of GM_L, because the centre of gravity is not part of that table.

Large angles

At each heel the hull is brought to equilibrium in sinkage and, with free trim, in trim, at constant displacement; GZ is the horizontal distance between the lines of action of weight and buoyancy. Equilibria are the zeros of GZ: sign changes and minima of |GZ| on the grid of angles, refined, and further roots searched for next to each root; the notes of each curve say what that search can miss.

Each equilibrium is classified from the stiffness in heel and trim, weighted by the work the levers do (the Hessian of the potential energy), where it is resolved on the faceted surface (its uncertainty is measured from three step sizes), and otherwise from the sign of GZ at shrinking excursions: stable, unstable, semi-stable (a double root), neutral or indeterminate, with "resolved" stated either way. The floating position reported is the stable equilibrium reached from upright in the direction of the heeling moment, if it lies within the admissible range of that side; a root beyond the downflooding angle is listed but never selected, and a symmetric loll is reported as a pair only if both angles are admissible.

Deck-edge immersion is reported for information; openings end the admissible range. The deck edge is the hull at or above the height given on the Inputs page, else the deck line of a table of offsets, else the top of the mesh, and the results say which. A height given counts all of the hull above it as deck edge: where the deck rises above that height, as with sheer, the deck-edge immersion angle found, and the limit of 80 % of it in the weather criterion (Part A 2.3.1.2), are lower bounds, on the safe side. A criterion is assessed only where every angle of its interval has a converged equilibrium, and it states the loading assumption it was assessed under. On the plot, GM₀ is the slope of the tangent to GZ at upright. It is read at 1 rad (57.3°), where the tangent stands GM₀ above its value at upright.

Tanks and free surfaces

A tank is a closed mesh (a box, or a file) clipped by the same engine as the hull, so the liquid's centre and the area and second moments of its surface are exact for the tank's facets. Following MSC.267(85) Part B 3.1, the initial GM is corrected by the transverse inertia of each liquid surface at 0° (at 5° and 98 % filling for a nominally full cargo tank). GZ is corrected either by the actual moment of fluid transfer, with every tank re-clipped at the heeled waterplane at constant volume inside the equilibrium iteration, or by the 0° inertia applied as a virtual rise of G. Either method is subject to the agreement of the Administration; the tool states which it used.

In assessment mode the Code's filling rules are applied and stated tank by tank. A variable filling is taken at its governing filling, chosen at the waterplane where the correction applies, heel and trim together: for GM, the filling with the largest surface inertia at the condition's upright waterplane; for GZ by the transfer method, the filling with the largest moment of transfer at the waterplane of each equilibrium of the curve. For each consumable liquid the pair or single tank with the greatest effect, ranked at the same waterplanes, is counted at its governing filling over its range (0 to 98 % when no range is given), even when it is already counted at its actual filling. The tank counted for GZ can therefore change from one heel to the next, and the curve is the envelope. Since the trim of an equilibrium is known only once it is solved, the choice is made again at that trim and the equilibrium solved again while the choice changes, at most six times; a difference left is counted as what the choice may miss.

The tool finds each governing filling by a search over 41 fillings and the fillings where the surface passes a corner of the tank, refines each maximum and checks the search against a coarser one. It is an approximation. Where the check fails, or where a tank has too many corners and the search is bounded instead, the heel is marked; with the transfer method the criteria are assessed again with GZ reduced by what the search may miss, and a criterion whose result changes is marked as not resolved. Where the filling for GM, or the consumable tank with the greatest effect on it, is not resolved, criterion 2.2.4 is marked, and with the inertia method, whose GZ uses the same correction, every criterion. In snapshot mode every partly filled tank counts at its given filling. Tank centres in the weight table are those of the liquid with the ship upright at zero trim, as in the sounding tables.

Inclining experiment

The heeling moment of each movement is the mass moved times its transverse shift; tan φ comes from the pendulum deflection over its length, or from an angle. A straight line is fitted to tan φ against the moment by least squares. It need not pass through the origin; the intercept and the residuals are shown, and the slope gives GM as inclined.

KM_T, the displacement and the centre of buoyancy come from the hull at the draughts read, trim included (hull deflection is not modelled), and G is placed on the normal to that waterplane through B. The free surfaces present are removed, and the inclining weights, the liquids and other masses are removed or added to reach the lightship. A simulated experiment computes, for the loading condition given, the exact heel after each movement and then analyses those readings; the difference between the condition's KG and the recovered one is what the straight-line method leaves out.

Reproducibility and privacy

Downloads carry a run record: tool version, configuration, the SHA-256 of every input file, this browser's identification and whether the engine ran in a web worker or, where the browser provides none, on the main thread. The configuration records every input of the run; with the input files it names, it states exactly what was computed. The results can also be saved as a detailed PDF report, which carries the record of the run with every result attached, and as that record alone (Download results JSON), which Open saved results shows again with the inputs of the run; the benchmarks as a PDF report. All are made on this device. Nothing you enter is stored after the page is closed, and nothing is sent anywhere. The page remembers, in this browser only, how it is shown: the theme chosen in the menu, and whether the contents panel is open and how wide.

Version & licence

Version 1.0.0 (build bd02ae869292 2026-11-03).

Free to use under the OpenNAOE Tool Licence 1.0, below. Third-party components keep their own licences, listed with their notices below: the PDF and OCR readers with the libraries compiled into them, the widths of the PDF fonts, which are Adobe's, under the Adobe AFM licence, and the outlines of the Greek letters and some signs of the PDF reports, from the Inter typeface, under the SIL Open Font License 1.1. This software is based in part on the work of the Independent JPEG Group. Report an error through Feedback, at the top right of the page.

Tables of offsets are best given as Excel or CSV files. A table read from an image or a PDF, by the PDF.js and Tesseract readers built into the page, is used only after you have checked the table and the drawing of its sections. Files stay on your device.

OpenNAOE Tool Licence, version 1.0

1. Use. You may use this tool free of charge, for any purpose, and make copies of it for your own use. A school,
university or other organization may also install it on the computers it manages, for the people who use them. It
is intended for learning, teaching and early design exploration, not for commercial engineering work: if you use it
for other work, including consultancy, or rely on its results, you do so entirely at your own risk.
2. Your inputs and results. This licence claims no rights in the inputs you give the tool or in the results it
produces for you, and places no conditions on how you use, publish or share them.
3. Restrictions. You may not modify the tool, use any part of its code in other software, or distribute the tool or
any part of its code, modified or not. Preparing your own inputs, including by editing copies of the example and
configuration files the tool provides, is use, not modification. Others can obtain the tool from opennaoe.org.
4. Other licences. Third-party components are under their own licences, and any part of the tool that a third-party
licence requires to be licensed under it is under that licence; the tool's notices list them. Those licences, not
this one, govern those parts, and nothing in this licence restricts what they permit.
5. No warranty; no liability. The tool is provided "as is", without warranty of any kind, express or implied,
including any warranty of accuracy or of fitness for a particular purpose. Its scope and limits are stated in the
tool. The author is not liable for any claim, damage or other liability arising from the tool, its use, its results
or any decision made with them. These exclusions apply to the extent permitted by applicable law.
6. Name and logo. This licence gives no right to use the OpenNAOE name or logo.

Third-party licences and notices

Third-party components of the OpenNAOE hydrostatics and stability tool

These components keep their own licences, given below; the OpenNAOE Tool Licence does not apply to them.

Embedded PDF and OCR readers, unmodified (the local resource-loading adapter is OpenNAOE code):
PDF.js 5.6.205: Mozilla Foundation and contributors; Apache-2.0.
Tesseract.js 7.0.0: Tesseract.js contributors; Apache-2.0.
Tesseract.js-core 7.0.0: Tesseract.js-core contributors; Apache-2.0; see the distributed source licence.
  The libraries compiled into it are listed in their own section below.
English tessdata_fast model: Hewlett Packard Company and Google Inc.; Apache-2.0.
The bundled JavaScript also carries its upstream dependency notices below.

PDF report writer: the glyph widths of the PDF standard fonts, from Adobe's AFM files; Adobe AFM licence
  (its own section below).
PDF report writer: the outlines of 63 characters (Greek letters, signs, the superscripts one to three and the micro
  sign) from the Inter typeface 4.000, The Inter Project Authors; SIL Open Font License 1.1 (last section).


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License: Apache-2.0

Files: debian/*
Copyright: 2007-2009 Jeffrey Ratcliffe <[email protected]>
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License: Apache-2.0

License: Apache-2.0
 Licensed under the Apache License, Version 2.0 (the "License");
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 Unless required by applicable law or agreed to in writing, software
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      to the Licensor or its representatives, including but not limited to
      communication on electronic mailing lists, source code control systems,
      and issue tracking systems that are managed by, or on behalf of, the
      Licensor for the purpose of discussing and improving the Work, but
      excluding communication that is conspicuously marked or otherwise
      designated in writing by the copyright owner as "Not a Contribution."

      "Contributor" shall mean Licensor and any individual or Legal Entity
      on behalf of whom a Contribution has been received by Licensor and
      subsequently incorporated within the Work.

   2. Grant of Copyright License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      copyright license to reproduce, prepare Derivative Works of,
      publicly display, publicly perform, sublicense, and distribute the
      Work and such Derivative Works in Source or Object form.

   3. Grant of Patent License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      (except as stated in this section) patent license to make, have made,
      use, offer to sell, sell, import, and otherwise transfer the Work,
      where such license applies only to those patent claims licensable
      by such Contributor that are necessarily infringed by their
      Contribution(s) alone or by combination of their Contribution(s)
      with the Work to which such Contribution(s) was submitted. If You
      institute patent litigation against any entity (including a
      cross-claim or counterclaim in a lawsuit) alleging that the Work
      or a Contribution incorporated within the Work constitutes direct
      or contributory patent infringement, then any patent licenses
      granted to You under this License for that Work shall terminate
      as of the date such litigation is filed.

   4. Redistribution. You may reproduce and distribute copies of the
      Work or Derivative Works thereof in any medium, with or without
      modifications, and in Source or Object form, provided that You
      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and
          attribution notices from the Source form of the Work,
          excluding those notices that do not pertain to any part of
          the Derivative Works; and

      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute must
          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed
          as part of the Derivative Works; within the Source form or
          documentation, if provided along with the Derivative Works; or,
          within a display generated by the Derivative Works, if and
          wherever such third-party notices normally appear. The contents
          of the NOTICE file are for informational purposes only and
          do not modify the License. You may add Your own attribution
          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions
      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work
      by You to the Licensor shall be under the terms and conditions of
      this License, without any additional terms or conditions.
      Notwithstanding the above, nothing herein shall supersede or modify
      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.

   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
      except as required for reasonable and customary use in describing the
      origin of the Work and reproducing the content of the NOTICE file.

   7. Disclaimer of Warranty. Unless required by applicable law or
      agreed to in writing, Licensor provides the Work (and each
      Contributor provides its Contributions) on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
      implied, including, without limitation, any warranties or conditions
      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
      PARTICULAR PURPOSE. You are solely responsible for determining the
      appropriateness of using or redistributing the Work and assume any
      risks associated with Your exercise of permissions under this License.

   8. Limitation of Liability. In no event and under no legal theory,
      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.

   9. Accepting Warranty or Additional Liability. While redistributing
      the Work or Derivative Works thereof, You may choose to offer,
      and charge a fee for, acceptance of support, warranty, indemnity,
      or other liability obligations and/or rights consistent with this
      License. However, in accepting such obligations, You may act only
      on Your own behalf and on Your sole responsibility, not on behalf
      of any other Contributor, and only if You agree to indemnify,
      defend, and hold each Contributor harmless for any liability
      incurred by, or claims asserted against, such Contributor by reason
      of your accepting any such warranty or additional liability.

   END OF TERMS AND CONDITIONS


----- TESSERACT-CORE-LICENSE.txt -----
                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
      "control" means (i) the power, direct or indirect, to cause the
      direction or management of such entity, whether by contract or
      otherwise, or (ii) ownership of fifty percent (50%) or more of the
      outstanding shares, or (iii) beneficial ownership of such entity.

      "You" (or "Your") shall mean an individual or Legal Entity
      exercising permissions granted by this License.

      "Source" form shall mean the preferred form for making modifications,
      including but not limited to software source code, documentation
      source, and configuration files.

      "Object" form shall mean any form resulting from mechanical
      transformation or translation of a Source form, including but
      not limited to compiled object code, generated documentation,
      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the
      editorial revisions, annotations, elaborations, or other modifications
      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain
      separable from, or merely link (or bind by name) to the interfaces of,
      the Work and Derivative Works thereof.

      "Contribution" shall mean any work of authorship, including
      the original version of the Work and any modifications or additions
      to that Work or Derivative Works thereof, that is intentionally
      submitted to Licensor for inclusion in the Work by the copyright owner
      or by an individual or Legal Entity authorized to submit on behalf of
      the copyright owner. For the purposes of this definition, "submitted"
      means any form of electronic, verbal, or written communication sent
      to the Licensor or its representatives, including but not limited to
      communication on electronic mailing lists, source code control systems,
      and issue tracking systems that are managed by, or on behalf of, the
      Licensor for the purpose of discussing and improving the Work, but
      excluding communication that is conspicuously marked or otherwise
      designated in writing by the copyright owner as "Not a Contribution."

      "Contributor" shall mean Licensor and any individual or Legal Entity
      on behalf of whom a Contribution has been received by Licensor and
      subsequently incorporated within the Work.

   2. Grant of Copyright License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      copyright license to reproduce, prepare Derivative Works of,
      publicly display, publicly perform, sublicense, and distribute the
      Work and such Derivative Works in Source or Object form.

   3. Grant of Patent License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      (except as stated in this section) patent license to make, have made,
      use, offer to sell, sell, import, and otherwise transfer the Work,
      where such license applies only to those patent claims licensable
      by such Contributor that are necessarily infringed by their
      Contribution(s) alone or by combination of their Contribution(s)
      with the Work to which such Contribution(s) was submitted. If You
      institute patent litigation against any entity (including a
      cross-claim or counterclaim in a lawsuit) alleging that the Work
      or a Contribution incorporated within the Work constitutes direct
      or contributory patent infringement, then any patent licenses
      granted to You under this License for that Work shall terminate
      as of the date such litigation is filed.

   4. Redistribution. You may reproduce and distribute copies of the
      Work or Derivative Works thereof in any medium, with or without
      modifications, and in Source or Object form, provided that You
      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and
          attribution notices from the Source form of the Work,
          excluding those notices that do not pertain to any part of
          the Derivative Works; and

      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute must
          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed
          as part of the Derivative Works; within the Source form or
          documentation, if provided along with the Derivative Works; or,
          within a display generated by the Derivative Works, if and
          wherever such third-party notices normally appear. The contents
          of the NOTICE file are for informational purposes only and
          do not modify the License. You may add Your own attribution
          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions
      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work
      by You to the Licensor shall be under the terms and conditions of
      this License, without any additional terms or conditions.
      Notwithstanding the above, nothing herein shall supersede or modify
      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.

   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
      except as required for reasonable and customary use in describing the
      origin of the Work and reproducing the content of the NOTICE file.

   7. Disclaimer of Warranty. Unless required by applicable law or
      agreed to in writing, Licensor provides the Work (and each
      Contributor provides its Contributions) on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
      implied, including, without limitation, any warranties or conditions
      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
      PARTICULAR PURPOSE. You are solely responsible for determining the
      appropriateness of using or redistributing the Work and assume any
      risks associated with Your exercise of permissions under this License.

   8. Limitation of Liability. In no event and under no legal theory,
      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.

   9. Accepting Warranty or Additional Liability. While redistributing
      the Work or Derivative Works thereof, You may choose to offer,
      and charge a fee for, acceptance of support, warranty, indemnity,
      or other liability obligations and/or rights consistent with this
      License. However, in accepting such obligations, You may act only
      on Your own behalf and on Your sole responsibility, not on behalf
      of any other Contributor, and only if You agree to indemnify,
      defend, and hold each Contributor harmless for any liability
      incurred by, or claims asserted against, such Contributor by reason
      of your accepting any such warranty or additional liability.

   END OF TERMS AND CONDITIONS

   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
      boilerplate notice, with the fields enclosed by brackets "{}"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

   Copyright {yyyy} {name of copyright owner}

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.



----- TESSERACT-LICENSE.txt -----
                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
      "control" means (i) the power, direct or indirect, to cause the
      direction or management of such entity, whether by contract or
      otherwise, or (ii) ownership of fifty percent (50%) or more of the
      outstanding shares, or (iii) beneficial ownership of such entity.

      "You" (or "Your") shall mean an individual or Legal Entity
      exercising permissions granted by this License.

      "Source" form shall mean the preferred form for making modifications,
      including but not limited to software source code, documentation
      source, and configuration files.

      "Object" form shall mean any form resulting from mechanical
      transformation or translation of a Source form, including but
      not limited to compiled object code, generated documentation,
      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the
      editorial revisions, annotations, elaborations, or other modifications
      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain
      separable from, or merely link (or bind by name) to the interfaces of,
      the Work and Derivative Works thereof.

      "Contribution" shall mean any work of authorship, including
      the original version of the Work and any modifications or additions
      to that Work or Derivative Works thereof, that is intentionally
      submitted to Licensor for inclusion in the Work by the copyright owner
      or by an individual or Legal Entity authorized to submit on behalf of
      the copyright owner. For the purposes of this definition, "submitted"
      means any form of electronic, verbal, or written communication sent
      to the Licensor or its representatives, including but not limited to
      communication on electronic mailing lists, source code control systems,
      and issue tracking systems that are managed by, or on behalf of, the
      Licensor for the purpose of discussing and improving the Work, but
      excluding communication that is conspicuously marked or otherwise
      designated in writing by the copyright owner as "Not a Contribution."

      "Contributor" shall mean Licensor and any individual or Legal Entity
      on behalf of whom a Contribution has been received by Licensor and
      subsequently incorporated within the Work.

   2. Grant of Copyright License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      copyright license to reproduce, prepare Derivative Works of,
      publicly display, publicly perform, sublicense, and distribute the
      Work and such Derivative Works in Source or Object form.

   3. Grant of Patent License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      (except as stated in this section) patent license to make, have made,
      use, offer to sell, sell, import, and otherwise transfer the Work,
      where such license applies only to those patent claims licensable
      by such Contributor that are necessarily infringed by their
      Contribution(s) alone or by combination of their Contribution(s)
      with the Work to which such Contribution(s) was submitted. If You
      institute patent litigation against any entity (including a
      cross-claim or counterclaim in a lawsuit) alleging that the Work
      or a Contribution incorporated within the Work constitutes direct
      or contributory patent infringement, then any patent licenses
      granted to You under this License for that Work shall terminate
      as of the date such litigation is filed.

   4. Redistribution. You may reproduce and distribute copies of the
      Work or Derivative Works thereof in any medium, with or without
      modifications, and in Source or Object form, provided that You
      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and
          attribution notices from the Source form of the Work,
          excluding those notices that do not pertain to any part of
          the Derivative Works; and

      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute must
          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed
          as part of the Derivative Works; within the Source form or
          documentation, if provided along with the Derivative Works; or,
          within a display generated by the Derivative Works, if and
          wherever such third-party notices normally appear. The contents
          of the NOTICE file are for informational purposes only and
          do not modify the License. You may add Your own attribution
          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions
      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work
      by You to the Licensor shall be under the terms and conditions of
      this License, without any additional terms or conditions.
      Notwithstanding the above, nothing herein shall supersede or modify
      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.

   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
      except as required for reasonable and customary use in describing the
      origin of the Work and reproducing the content of the NOTICE file.

   7. Disclaimer of Warranty. Unless required by applicable law or
      agreed to in writing, Licensor provides the Work (and each
      Contributor provides its Contributions) on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
      implied, including, without limitation, any warranties or conditions
      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
      PARTICULAR PURPOSE. You are solely responsible for determining the
      appropriateness of using or redistributing the Work and assume any
      risks associated with Your exercise of permissions under this License.

   8. Limitation of Liability. In no event and under no legal theory,
      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.

   9. Accepting Warranty or Additional Liability. While redistributing
      the Work or Derivative Works thereof, You may choose to offer,
      and charge a fee for, acceptance of support, warranty, indemnity,
      or other liability obligations and/or rights consistent with this
      License. However, in accepting such obligations, You may act only
      on Your own behalf and on Your sole responsibility, not on behalf
      of any other Contributor, and only if You agree to indemnify,
      defend, and hold each Contributor harmless for any liability
      incurred by, or claims asserted against, such Contributor by reason
      of your accepting any such warranty or additional liability.

   END OF TERMS AND CONDITIONS

   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
      boilerplate notice, with the fields enclosed by brackets "{}"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

   Copyright {yyyy} {name of copyright owner}

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.


----- dependency-licenses/bmp-js-LICENSE -----
The MIT License (MIT)

Copyright (c) 2014 @丝刀口

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


----- dependency-licenses/idb-keyval-LICENCE -----
Copyright 2016, Jake Archibald

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

----- dependency-licenses/is-url-LICENSE-MIT -----
MIT LICENSE

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.


----- dependency-licenses/regenerator-runtime-LICENSE -----
MIT License

Copyright (c) 2014-present, Facebook, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


----- dependency-licenses/wasm-feature-detect-LICENSE -----

                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
      "control" means (i) the power, direct or indirect, to cause the
      direction or management of such entity, whether by contract or
      otherwise, or (ii) ownership of fifty percent (50%) or more of the
      outstanding shares, or (iii) beneficial ownership of such entity.

      "You" (or "Your") shall mean an individual or Legal Entity
      exercising permissions granted by this License.

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----- dependency-licenses/zlibjs-LICENSE -----
/**
 * @license
 * zlib.js
 * JavaScript Zlib Library
 * https://github.com/imaya/zlib.js
 *
 * The MIT License
 *
 * Copyright (c) 2012 imaya
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */


----- tesseract.min.js.LICENSE.txt -----
/*! regenerator-runtime -- Copyright (c) 2014-present, Facebook, Inc. -- license (MIT): https://github.com/facebook/regenerator/blob/main/LICENSE */


----- worker.min.js.LICENSE.txt -----
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */

/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */

/*! regenerator-runtime -- Copyright (c) 2014-present, Facebook, Inc. -- license (MIT): https://github.com/facebook/regenerator/blob/main/LICENSE */

/** @license zlib.js 2012 - imaya [ https://github.com/imaya/zlib.js ] The MIT License */


===== Libraries compiled into tesseract-core-lstm.wasm.js =====
Tesseract.js-core 7.0.0 (tag v7.0.0, commit acffef2b66eb44a31df297e11d905f4b39001068) compiles Tesseract
and the libraries below to WebAssembly with Emscripten 4.0.15 (its build-with-docker.sh). The versions are those
of the submodule commits recorded at that tag. Their notices follow, taken from those commits.
This software is based in part on the work of the Independent JPEG Group.

Tesseract (commit 2a9c1c49c360462733c386d2a44fcd22c4e21411): Apache-2.0; licence text in TESSERACT-CORE-LICENSE.txt above.
Leptonica 1.83.0 (commit 4af068b56a9674da915debea4ed7e1b9885b17e8): BSD-2-Clause.
libjpeg 9a, Independent JPEG Group (commit 6c0fcb8ddee365e7abc4d332662b06900612e923): IJG licence.
libpng 1.6.38.git (commit a37d4836519517bdce6cb9d956092321eca3e73b): PNG Reference Library License version 2.
libtiff 4.3.0 (commit b51bb157123264e26d34c09cc673d213aea61fc7): libtiff licence.
libwebp 1.2.2 (commit 20ef03ee351d4ff03fc5ff3ec4804a879d1b9d5c): BSD-3-Clause, with Google's patent grant.
giflib 5.1.4 (commit fa37672085ce4b3d62c51627ab3c8cf2dda8009a): MIT.
zlib 1.2.12 (commit 21767c654d31d2dccdde4330529775c6c5fd5389): zlib licence.
OpenLibm 0.8.0 (commit ae2d91698508701c83cab83714d42a1146dccf85): MIT, ISC, BSD-2-Clause and the FDLIBM notice.
  Built by the same scripts; its LGPL test files are not part of the library.
Emscripten 4.0.15 runtime and its musl libc: MIT.
LLVM libc++, libc++abi and compiler-rt (in Emscripten 4.0.15): Apache-2.0 with LLVM Exceptions, under which
  portions embedded in compiled object code need no notice.


----- Leptonica -----
/*====================================================================*
 -  Copyright (C) 2001-2020 Leptonica.  All rights reserved.
 -
 -  Redistribution and use in source and binary forms, with or without
 -  modification, are permitted provided that the following conditions
 -  are met:
 -  1. Redistributions of source code must retain the above copyright
 -     notice, this list of conditions and the following disclaimer.
 -  2. Redistributions in binary form must reproduce the above
 -     copyright notice, this list of conditions and the following
 -     disclaimer in the documentation and/or other materials
 -     provided with the distribution.
 -
 -  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 -  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 -  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 -  A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ANY
 -  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 -  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 -  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 -  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 -  OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 -  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 -  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *====================================================================*/


----- libjpeg (Independent JPEG Group), README, LEGAL ISSUES -----
The authors make NO WARRANTY or representation, either express or implied,
with respect to this software, its quality, accuracy, merchantability, or
fitness for a particular purpose.  This software is provided "AS IS", and you,
its user, assume the entire risk as to its quality and accuracy.

This software is copyright (C) 1991-2014, Thomas G. Lane, Guido Vollbeding.
All Rights Reserved except as specified below.

Permission is hereby granted to use, copy, modify, and distribute this
software (or portions thereof) for any purpose, without fee, subject to these
conditions:
(1) If any part of the source code for this software is distributed, then this
README file must be included, with this copyright and no-warranty notice
unaltered; and any additions, deletions, or changes to the original files
must be clearly indicated in accompanying documentation.
(2) If only executable code is distributed, then the accompanying
documentation must state that "this software is based in part on the work of
the Independent JPEG Group".
(3) Permission for use of this software is granted only if the user accepts
full responsibility for any undesirable consequences; the authors accept
NO LIABILITY for damages of any kind.

These conditions apply to any software derived from or based on the IJG code,
not just to the unmodified library.  If you use our work, you ought to
acknowledge us.

Permission is NOT granted for the use of any IJG author's name or company name
in advertising or publicity relating to this software or products derived from
it.  This software may be referred to only as "the Independent JPEG Group's
software".

We specifically permit and encourage the use of this software as the basis of
commercial products, provided that all warranty or liability claims are
assumed by the product vendor.


----- libpng, LICENSE -----
PNG Reference Library License version 2
---------------------------------------

 * Copyright (c) 1995-2020 The PNG Reference Library Authors.
 * Copyright (c) 2018-2020 Cosmin Truta.
 * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
 * Copyright (c) 1996-1997 Andreas Dilger.
 * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.

The software is supplied "as is", without warranty of any kind,
express or implied, including, without limitation, the warranties
of merchantability, fitness for a particular purpose, title, and
non-infringement.  In no event shall the Copyright owners, or
anyone distributing the software, be liable for any damages or
other liability, whether in contract, tort or otherwise, arising
from, out of, or in connection with the software, or the use or
other dealings in the software, even if advised of the possibility
of such damage.

Permission is hereby granted to use, copy, modify, and distribute
this software, or portions hereof, for any purpose, without fee,
subject to the following restrictions:

 1. The origin of this software must not be misrepresented; you
    must not claim that you wrote the original software.  If you
    use this software in a product, an acknowledgment in the product
    documentation would be appreciated, but is not required.

 2. Altered source versions must be plainly marked as such, and must
    not be misrepresented as being the original software.

 3. This Copyright notice may not be removed or altered from any
    source or altered source distribution.


----- libtiff, COPYRIGHT -----
Copyright (c) 1988-1997 Sam Leffler
Copyright (c) 1991-1997 Silicon Graphics, Inc.

Permission to use, copy, modify, distribute, and sell this software and 
its documentation for any purpose is hereby granted without fee, provided
that (i) the above copyright notices and this permission notice appear in
all copies of the software and related documentation, and (ii) the names of
Sam Leffler and Silicon Graphics may not be used in any advertising or
publicity relating to the software without the specific, prior written
permission of Sam Leffler and Silicon Graphics.

THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  

IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
OF THIS SOFTWARE.


----- libwebp, COPYING -----
Copyright (c) 2010, Google Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

  * Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.

  * Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in
    the documentation and/or other materials provided with the
    distribution.

  * Neither the name of Google nor the names of its contributors may
    be used to endorse or promote products derived from this software
    without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


----- libwebp, PATENTS -----
Additional IP Rights Grant (Patents)
------------------------------------

"These implementations" means the copyrightable works that implement the WebM
codecs distributed by Google as part of the WebM Project.

Google hereby grants to you a perpetual, worldwide, non-exclusive, no-charge,
royalty-free, irrevocable (except as stated in this section) patent license to
make, have made, use, offer to sell, sell, import, transfer, and otherwise
run, modify and propagate the contents of these implementations of WebM, where
such license applies only to those patent claims, both currently owned by
Google and acquired in the future, licensable by Google that are necessarily
infringed by these implementations of WebM. This grant does not include claims
that would be infringed only as a consequence of further modification of these
implementations. If you or your agent or exclusive licensee institute or order
or agree to the institution of patent litigation or any other patent
enforcement activity against any entity (including a cross-claim or
counterclaim in a lawsuit) alleging that any of these implementations of WebM
or any code incorporated within any of these implementations of WebM
constitute direct or contributory patent infringement, or inducement of
patent infringement, then any patent rights granted to you under this License
for these implementations of WebM shall terminate as of the date such
litigation is filed.


----- giflib, COPYING -----
The GIFLIB distribution is Copyright (c) 1997  Eric S. Raymond

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.


----- zlib, README, Copyright notice -----
(C) 1995-2022 Jean-loup Gailly and Mark Adler

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Jean-loup Gailly        Mark Adler
  [email protected]          [email protected]


----- OpenLibm, LICENSE.md (without the section on its test files) -----
## OpenLibm

OpenLibm contains code that is covered by various licenses.

The OpenLibm code derives from the FreeBSD msun and OpenBSD libm
implementations, which in turn derives from FDLIBM 5.3. As a result, it
has a number of fixes and updates that have accumulated over the years
in msun, and also optimized assembly versions of many functions. These
improvements are provided under the BSD and ISC licenses. The msun
library also includes work placed under the public domain, which is
noted in the individual files. Further work on making a standalone
OpenLibm library from msun, as part of the Julia project is covered
under the MIT license. The test files, test-double.c and test-float.c
are under the LGPL.

## Parts copyrighted by the Julia project (MIT License)

>       Copyright (c) 2011-14 The Julia Project.
>       https://github.com/JuliaMath/openlibm/graphs/contributors
>
>       Permission is hereby granted, free of charge, to any person obtaining
>       a copy of this software and associated documentation files (the
>       "Software"), to deal in the Software without restriction, including
>       without limitation the rights to use, copy, modify, merge, publish,
>       distribute, sublicense, and/or sell copies of the Software, and to
>       permit persons to whom the Software is furnished to do so, subject to
>       the following conditions:
>
>       The above copyright notice and this permission notice shall be
>       included in all copies or substantial portions of the Software.
>
>       THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>       EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
>       MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
>       NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
>       LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
>       OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
>       WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

## Parts copyrighted by Stephen L. Moshier (ISC License)

> Copyright (c) 2008 Stephen L. Moshier <[email protected]>
>
> Permission to use, copy, modify, and distribute this software for any
> purpose with or without fee is hereby granted, provided that the above
> copyright notice and this permission notice appear in all copies.
>
> THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
> MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
> ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
> WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

## FREEBSD MSUN (FreeBSD/2-clause BSD/Simplified BSD License)

>       Copyright 1992-2011 The FreeBSD Project. All rights reserved.
>
>       Redistribution and use in source and binary forms, with or without
>       modification, are permitted provided that the following conditions are
>       met:
>
>       1. Redistributions of source code must retain the above copyright
>       notice, this list of conditions and the following disclaimer.
>
>       2. Redistributions in binary form must reproduce the above copyright
>       notice, this list of conditions and the following disclaimer in the
>       documentation and/or other materials provided with the distribution.
>       THIS SOFTWARE IS PROVIDED BY THE FREEBSD PROJECT ``AS IS'' AND ANY
>       EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
>       IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
>       PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FREEBSD PROJECT OR
>       CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
>       EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
>       PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
>       PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
>       LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
>       NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
>       SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>
>       The views and conclusions contained in the software and documentation
>       are those of the authors and should not be interpreted as representing
>       official policies, either expressed or implied, of the FreeBSD
>       Project.

## FDLIBM

>      Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
>
>      Developed at SunPro, a Sun Microsystems, Inc. business.
>      Permission to use, copy, modify, and distribute this
>      software is freely granted, provided that this notice
>      is preserved.


----- Emscripten, LICENSE (the MIT licence of its two) -----
Copyright (c) 2010-2014 Emscripten authors, see AUTHORS file.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.


----- Emscripten, LICENSE (Node.js portions) -----
This program uses portions of Node.js source code located in src/library_path.js,
in accordance with the terms of the MIT license. Node's license follows:

    """
        Copyright Joyent, Inc. and other Node contributors. All rights reserved.
        Permission is hereby granted, free of charge, to any person obtaining a copy
        of this software and associated documentation files (the "Software"), to
        deal in the Software without restriction, including without limitation the
        rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
        sell copies of the Software, and to permit persons to whom the Software is
        furnished to do so, subject to the following conditions:

        The above copyright notice and this permission notice shall be included in
        all copies or substantial portions of the Software.

        THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
        IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
        FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
        AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
        LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
        FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
        IN THE SOFTWARE.


----- musl libc in Emscripten, COPYRIGHT -----
Copyright © 2005-2020 Rich Felker, et al.

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.


===== Libraries bundled into tesseract-worker.min.js =====
buffer 6.0.3, base64-js 1.5.1 and ieee754 1.2.1, the versions pinned by Tesseract.js 7.0.0 (package-lock.json at tag v7.0.0).


----- buffer 6.0.3, LICENSE -----
The MIT License (MIT)

Copyright (c) Feross Aboukhadijeh, and other contributors.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.


----- base64-js 1.5.1, LICENSE -----
The MIT License (MIT)

Copyright (c) 2014 Jameson Little

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.


----- ieee754 1.2.1, LICENSE -----
Copyright 2008 Fair Oaks Labs, Inc.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


===== PDF report writer: Adobe standard-font widths (web/src/ui/pdf-fonts.js) =====
Glyph widths of the PDF standard fonts Helvetica, Helvetica-Bold (also for their oblique faces), Symbol and
ZapfDingbats, in thousandths of an em, from Adobe's AFM files of the 14 PDF core fonts.
Copyright (c) 1985, 1987, 1989, 1990, 1997 Adobe Systems Incorporated.  All Rights Reserved.Helvetica is a trademark of Linotype-Hell AG and/or its subsidiaries.
Copyright (c) 1985, 1987, 1989, 1990, 1997 Adobe Systems Incorporated. All rights reserved.
Copyright (c) 1985, 1987, 1988, 1989, 1997 Adobe Systems Incorporated. All Rights Reserved.ITC Zapf Dingbats is a registered trademark of International Typeface Corporation.
Modified by OpenNAOE (2026): only the advance widths (WX) are kept, rearranged by scripts/pdf-fonts.mjs for the
WinAnsi encoding (Helvetica) and for the Unicode characters listed (Symbol, ZapfDingbats); the header values
Ascender, Descender, CapHeight and XHeight of Helvetica are kept. Nothing else is taken from the AFM files.

This file and the 14 PostScript(R) AFM files it accompanies may be used, copied, and distributed for any purpose and
without charge, with or without modification, provided that all copyright notices are retained; that the AFM files are
not distributed without this file; that all modifications to this file or any of the AFM files are prominently noted
in the modified file(s); and that this paragraph is not modified. Adobe Systems has no responsibility or obligation to
support the use of the AFM files.

===== PDF report writer: glyphs from Inter (web/src/ui/pdf-glyphs.js) =====
The outlines and advance widths of 63 characters, drawn as a Type 3 font in the PDF reports, from Inter Regular 4.000.
Copyright 2016-2023 The Inter Project Authors (https://github.com/rsms/inter). No Reserved Font Name.
Modified by OpenNAOE (2026): only the outlines and advance widths of those characters are kept, scaled to thousandths
of an em; U+2207 is the Delta turned upside down, and U+223C, U+22C5, U+2714 and U+2718 are the glyphs of the tilde,
the middle dot, U+2713 and U+2717. Documents made with them, such as the reports, are not subject to this licence.

This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL


-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font
creation efforts of academic and linguistic communities, and to
provide a free and open framework in which fonts may be shared and
improved in partnership with others.

The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded,
redistributed and/or sold with any software provided that any
reserved names are not used by derivative works. The fonts and
derivatives, however, cannot be released under any other type of
license. The requirement for fonts to remain under this license
does not apply to any document created using the fonts or their
derivatives.

DEFINITIONS
Font Software refers to the set of files released by the
Copyright Holder(s) under this license and clearly marked as such.
This may include source files, build scripts and documentation.

Reserved Font Name refers to any names specified as such after
the copyright statement(s).

Original Version refers to the collection of Font Software
components as distributed by the Copyright Holder(s).

Modified Version refers to any derivative made by adding to,
deleting, or substituting in part or in whole any of the components
of the Original Version, by changing formats or by porting the Font
Software to a new environment.

Author refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.

PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person
obtaining a copy of the Font Software, to use, study, copy, merge,
embed, modify, redistribute, and sell modified and unmodified copies
of the Font Software, subject to the following conditions:

1) Neither the Font Software nor any of its individual components,
   in Original or Modified Versions, may be sold by itself.

2) Original or Modified Versions of the Font Software may be bundled,
   redistributed and/or sold with any software, provided that each
   copy contains the above copyright notice and this license. These
   can be included either as stand-alone text files, human-readable
   headers or in the appropriate machine-readable metadata fields
   within text or binary files as long as those fields can be easily
   viewed by the user.

3) No Modified Version of the Font Software may use the Reserved Font
   Name(s) unless explicit written permission is granted by the
   corresponding Copyright Holder. This restriction only applies to
   the primary font name as presented to the users.

4) The name(s) of the Copyright Holder(s) or the Author(s) of the
   Font Software shall not be used to promote, endorse or advertise
   any Modified Version, except to acknowledge the contribution(s)
   of the Copyright Holder(s) and the Author(s) or with their
   explicit written permission.

5) The Font Software, modified or unmodified, in part or in whole,
   must be distributed entirely under this license, and must not be
   distributed under any other license. The requirement for fonts to
   remain under this license does not apply to any document created
   using the Font Software.

TERMINATION
This license becomes null and void if any of the above conditions
are not met.

DISCLAIMER
THE FONT SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL
THE COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT
SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.

Verify the download

Each release of this file is published with its SHA-256 checksum, on the tool's page at opennaoe.org and in its Zenodo record. To check that a copy is the released file, compute its checksum and compare the two: on Windows, certutil -hashfile <file> SHA256; on macOS, shasum -a 256 <file>; on Linux, sha256sum <file>. A different value means that the copy is not the released file.