Licences

Last updated 8 October 2026.

This site is built on other people’s work. Every piece of it is open source, and each one is used under a licence that asks for the same thing in return: that the notice travels with the software. This page is that notice. The full text of every licence is below, served from this site rather than linked to somebody else’s, so that it cannot go missing.

Nothing here changes how the site works or what it does with your files. That is on the What we store page.

Served from this site

These are sent by this server, so a copy of each licence sits beside the file as well as on this page. The models and data run in your browser on your own machine, in the room that uses them, and whatever they are shown never leaves it.

ffmpeg.wasm (@ffmpeg/ffmpeg) 0.12.15 — MIT
Copyright (c) 2019 Jerome Wu
The small loader that starts the video converter. Kept on this site so the worker it spawns is same-origin. Licence also at /vendor/ffmpeg/LICENSE.
FFmpeg n5.1.4, built for this site — LGPL-2.1-or-later
Copyright (c) the FFmpeg authors and contributors
The video and audio converter (11 MB). A build this site makes itself, with only royalty-free or out-of-patent codecs in it and no GPL component; how and why is set out below. It carries LAME (LGPL-2.0-or-later), libvpx, libwebp, Opus, libvorbis and libogg (BSD-3-Clause; libvpx and libwebp with Google’s royalty-free patent grant), dav1d (BSD-2-Clause; AV1 is royalty-free under the Alliance for Open Media’s patent licence), zlib (zlib licence) and the ffmpeg.wasm binding (MIT). Its complete source, with the changes and the recipe that make this build, and the exact versions of the BSD-licensed libraries in it: /vendor/ffmpeg-core/source/ffmpeg-core-rf7-source.tar.xz. Every licence in full at /vendor/ffmpeg-core/LICENSE.
Mediabunny 1.61.0 — MPL-2.0
Copyright (c) Vanilagy and the Mediabunny contributors
Reads and writes video and audio files around the browser’s own codecs (690 KB). Served unmodified; its source is at github.com/Vanilagy/mediabunny and in the npm package of the same version. Licence also at /vendor/mediabunny/LICENSE.
MODNet exported here from the authors’ photographic portrait matting weights, half precision — Apache-2.0
Copyright (c) Zhanghan Ke and the MODNet authors
The subject matting model behind “remove the background” (12.5 MB). Licence also at /models/LICENSE.
U²-Netp exported here from the authors’ weights — Apache-2.0
Copyright (c) Xuebin Qin and the U-2-Net authors
Finds the subject of a photograph when the subject is not a person — an animal, a car (4.4 MB). Licence also at /models/LICENSE.
SCUNet (colour, real-image) exported here from the authors’ weights, half precision — Apache-2.0
Copyright (c) 2022 Kai Zhang
“Smart denoise” in the photo room (38 MB). Licence also at /models/LICENSE.
Depth Anything V2, Small the authors’ weights, converted to ONNX (half precision) by the onnx-community — Apache-2.0
Copyright (c) 2024 Lihe Yang, Bingyi Kang, Zilong Huang and the Depth Anything V2 authors
“Use depth” under Dehaze in the photo room: how far away each part of the photograph is, worked out on your device (50 MB). Only the Small model is used — the larger ones are non-commercial. Licence also at /models/LICENSE.
SADIE II Database subjects D1 (KU100 dummy head), D2 (KEMAR) and H3–H20 (people), 48 kHz head-related impulse responses — Apache-2.0
All measurements are Copyright University of York. SADIE II Database, AudioLab, University of York (Gavin Kearney et al.); C. Armstrong, L. Thresh, D. Murphy and G. Kearney, “A Perceptual Evaluation of Individual and Non-Individual HRTFs: A Case Study of the SADIE II Database”, Applied Sciences 8(11), 2029, 2018, doi:10.3390/app8112029.
The heads of “Headphones 3D” in Place, in the music room: D1, the default (411 KB, /media/hrtf/sadie-ku100-v1.uch), modified by us: 649 of the measured directions taken (elevations −45° to 90°, every 5° of azimuth), diffuse-field equalised, each response aligned to its arrival with the arrival kept as a delay, cut to 160 taps and stored in our own format. D2 and the 18 people (411 KB each, /media/hrtf/sadie-*-v1.uch), from the SOFA files: brought to 48 kHz where measured at another rate; 649 directions made from the nearest measured ones (elevations −45° to 90°, every 5° of azimuth; the zenith or the lowest ring filled from the ring around it where not measured), each response aligned to its arrival with the arrival kept as a delay, diffuse-field equalised, brought to the KU100’s loudness, cut to 160 taps and stored in our own format. The University of York makes no representation or warranties with respect to the contents and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose.
FABIAN head-related transfer function data base the FABIAN head and torso simulator, measured, head straight above the torso (version 5) — CC BY 4.0
Fabian Brinkmann, Alexander Lindau, Stefan Weinzierl, Gunnar Geissler, Steven van de Par, Markus Müller-Trapet, Rob Opdam and Michael Vorländer (TU Berlin, University of Oldenburg, RWTH Aachen), doi:10.14279/depositonce-5718.5; F. Brinkmann et al., “A High Resolution and Full-Spherical Head-Related Transfer Function Database for Different Head-Above-Torso Orientations”, J. Audio Eng. Soc. 65(10), 841–848, 2017, doi:10.17743/jaes.2017.0033.
A head in Place’s Headphones 3D (411 KB, /media/hrtf/fabian-v1.uch). Modified by us: brought to 48 kHz where measured at another rate; 649 directions made from the nearest measured ones (elevations −45° to 90°, every 5° of azimuth; the zenith or the lowest ring filled from the ring around it where not measured), each response aligned to its arrival with the arrival kept as a delay, diffuse-field equalised, brought to the KU100’s loudness, cut to 160 taps and stored in our own format.
HUTUBS head-related transfer function database 93 people, measured — CC BY 4.0
Fabian Brinkmann, Manoj Dinakaran, Robert Pelzer, Peter Grosche, Daniel Voss and Stefan Weinzierl (TU Berlin, Huawei, Sennheiser), doi:10.14279/depositonce-8487; “A cross-evaluated database of measured and simulated HRTFs including 3D head meshes, anthropometric features, and headphone impulse responses”, J. Audio Eng. Soc. 67(9), 705–718, 2019, doi:10.17743/jaes.2019.0024. Each head’s width is taken from the database’s anthropometric measures.
Heads in Place’s Headphones 3D (411 KB each, /media/hrtf/hutubs-*-v1.uch). Modified by us: brought to 48 kHz where measured at another rate; 649 directions made from the nearest measured ones (elevations −45° to 90°, every 5° of azimuth; the zenith or the lowest ring filled from the ring around it where not measured), each response aligned to its arrival with the arrival kept as a delay, diffuse-field equalised, brought to the KU100’s loudness, cut to 160 taps and stored in our own format.
The Viking HRTF dataset v2 a KEMAR with 20 pairs of ears cast from head replicas — CC BY 4.0
Simone Spagnol, Riccardo Miccini and Rúnar Unnthórsson (Aalborg University, University of Iceland), doi:10.5281/zenodo.4160401; S. Spagnol, K. B. Purkhús, S. K. Björnsson and R. Unnthórsson, “The Viking HRTF Dataset”, Proc. Sound and Music Computing Conference 2019, 55–60.
The KEMAR ears in Place’s Headphones 3D (411 KB each, /media/hrtf/viking-*-v1.uch). Modified by us: brought to 48 kHz where measured at another rate; 649 directions made from the nearest measured ones (elevations −45° to 90°, every 5° of azimuth; the zenith or the lowest ring filled from the ring around it where not measured), each response aligned to its arrival with the arrival kept as a delay, diffuse-field equalised, brought to the KU100’s loudness, cut to 160 taps and stored in our own format.
A multiple model high-resolution head-related impulse response database for aided and unaided ears KEMAR and HMS II.2, the short responses — CC BY 4.0
Joachim Thiemann and Steven van de Par (University of Oldenburg), doi:10.5281/zenodo.3767044; EURASIP Journal on Advances in Signal Processing 2019:9, doi:10.1186/s13634-019-0604-x.
Heads in Place’s Headphones 3D (411 KB each, /media/hrtf/mmhr-*-v1.uch). Modified by us: brought to 48 kHz where measured at another rate; 649 directions made from the nearest measured ones (elevations −45° to 90°, every 5° of azimuth; the zenith or the lowest ring filled from the ring around it where not measured), each response aligned to its arrival with the arrival kept as a delay, diffuse-field equalised, brought to the KU100’s loudness, cut to 160 taps and stored in our own format.
SS2 HRTF Dataset people measured in Sound Sphere 2 — CC BY 4.0
Meta Reality Labs Research, measured at the 2022 AES Audio for Virtual and Augmented Reality conference; github.com/facebookresearch/SS2_HRTF. The published responses stop at about 16 kHz.
Heads in Place’s Headphones 3D (411 KB each, /media/hrtf/ss2-*-v1.uch). Modified by us: brought to 48 kHz where measured at another rate; 649 directions made from the nearest measured ones (elevations −45° to 90°, every 5° of azimuth; the zenith or the lowest ring filled from the ring around it where not measured), each response aligned to its arrival with the arrival kept as a delay, diffuse-field equalised, brought to the KU100’s loudness, cut to 160 taps and stored in our own format.
3D3A Lab HRTF Database people, measured and diffuse-field equalised responses — CC BY 4.0
Rahulram Sridhar, Joseph G. Tylka and Edgar Y. Choueiri (3D Audio and Applied Acoustics Lab, Princeton University); R. Sridhar, J. G. Tylka and E. Y. Choueiri, “A database of head-related transfer function and morphological measurements”, AES 143rd Convention, 2017; R. Sridhar and E. Y. Choueiri, “The 3D3A Lab Head-Related Transfer Function Database”, 3D3A Lab Technical Report #3, 2021.
Heads in Place’s Headphones 3D (411 KB each, /media/hrtf/3d3a-*-v1.uch). Modified by us: brought to 48 kHz where measured at another rate; 649 directions made from the nearest measured ones (elevations −45° to 90°, every 5° of azimuth; the zenith or the lowest ring filled from the ring around it where not measured), each response aligned to its arrival with the arrival kept as a delay, diffuse-field equalised, brought to the KU100’s loudness, cut to 160 taps and stored in our own format.
RWTH Aachen high-resolution HRTF data sets a KEMAR, and one person (5° interpolation) — CC BY 4.0
Hark Simon Braren and Janina Fels (Institute of Technical Acoustics, RWTH Aachen University), “A High-Resolution Head-Related Transfer Function Data Set and 3D-Scan of KEMAR”, 2020, doi:10.18154/RWTH-2020-11307; “A High-Resolution Individual 3D Adult Head and Torso Model for HRTF Simulation and Validation: HRTF Measurement”, 2020, doi:10.18154/RWTH-2020-06761.
Heads in Place’s Headphones 3D (411 KB each, /media/hrtf/aachen-*-v1.uch). Modified by us: brought to 48 kHz where measured at another rate; 649 directions made from the nearest measured ones (elevations −45° to 90°, every 5° of azimuth; the zenith or the lowest ring filled from the ring around it where not measured), each response aligned to its arrival with the arrival kept as a delay, diffuse-field equalised, brought to the KU100’s loudness, cut to 160 taps and stored in our own format.
COAT — Cross-site Oldenburg-Aachener transfer-functions people measured in Aachen, at the blocked ear canal — CC BY 4.0
Michael Kohnen, Florian Denk, Josep Llorca-Bofí, Birger Kollmeier and Michael Vorländer, doi:10.5281/zenodo.4556707.
Heads in Place’s Headphones 3D (411 KB each, /media/hrtf/coat-*-v1.uch). Modified by us: brought to 48 kHz where measured at another rate; 649 directions made from the nearest measured ones (elevations −45° to 90°, every 5° of azimuth; the zenith or the lowest ring filled from the ring around it where not measured), each response aligned to its arrival with the arrival kept as a delay, diffuse-field equalised, brought to the KU100’s loudness, cut to 160 taps and stored in our own format.
MIT Media Lab KEMAR HRTF measurements KEMAR with its normal and its large ears (the SOFA conversion by the Acoustics Research Institute) — free, “provided without any usage restrictions”
Copyright 1994 by the MIT Media Laboratory. Bill Gardner and Keith Martin, “HRTF measurements of a KEMAR”, J. Acoust. Soc. Am. 97(6), 3907–3908, 1995.
Heads in Place’s Headphones 3D (411 KB each, /media/hrtf/mit-*-v1.uch). Modified by us: brought to 48 kHz where measured at another rate; 649 directions made from the nearest measured ones (elevations −45° to 90°, every 5° of azimuth; the zenith or the lowest ring filled from the ring around it where not measured), each response aligned to its arrival with the arrival kept as a delay, diffuse-field equalised, brought to the KU100’s loudness, cut to 160 taps and stored in our own format.
The rooms’ background films and stills — photographs from Pexels, set in motion with Google Gemini
Photographs under the Pexels licence; the photographers keep their copyright.
The moving backgrounds of the rooms, /compare and /showcase (/media/). Each started as a photograph from Pexels and was made into a film with an AI video tool (Google Gemini); we then cut, graded, looped and compressed them. They are decoration: none shows a real event. [CONFIRM]
Real-ESRGAN realesr-general-x4v3, exported here from the authors’ weights — BSD-3-Clause
Copyright (c) 2021 Xintao Wang
“Upscale” in the photo room (4.9 MB). Licence also at /models/LICENSE.
Real-ESRGAN, for footage realesr-animevideov3 and realesr-general-x4v3, exported here from the authors’ weights at half precision — BSD-3-Clause
Copyright (c) 2021 Xintao Wang
“AI Fast” (1.3 MB) and “AI Best” (2.4 MB) under Bigger in the video room. Licence also at /models/LICENSE.
Lensfun lens database the measurements only, not the library — CC BY-SA 3.0
© the Lensfun contributors — lensfun.github.io
What “Lens” in the photo room’s Develop panel corrects with: how far each of about fifteen hundred lenses bends straight lines, darkens the corners and splits colour at the edges. Their library is LGPL-3.0 and is not used here — only the numbers, re-implemented from the published formulas.
Changed from the original: Lensfun's XML files were converted into one JSON file holding only the fields used here. Share-alike applies to the data, so that file is offered under the same licence, CC BY-SA 3.0: /models/lens-profiles.json. It does not extend to this site’s code, and it does not extend to your photographs: correcting a picture with a measurement does not make the picture an adaptation of the measurement.
OKLab colour space the conversion formulas — MIT
Copyright (c) 2020 Björn Ottosson — bottosson.github.io
The colour space the photo room shapes colour in: its sliders, its mixer and Universal Conversion Natural. Only the published conversion matrices are used; the rest is this site’s own.
YuNet face_detection_yunet_2023mar — MIT
Copyright (c) 2020 Shiqi Yu
Finds faces, so the photo room can put an oval on each one (232 KB). Licence also at /models/LICENSE.
Liberation Sans 2.1.5 — SIL Open Font License 1.1
Copyright (c) 2012 Red Hat, Inc., with Reserved Font Name Liberation; digitized data copyright (c) 2010 Google Corporation
Stands in for Helvetica and Arial in PDFs that do not carry their own fonts (four files, 1 MB). PDF.js bundles Liberation 1.x, which is GPL-2.0 — this is the 2.x release Red Hat relicensed under the OFL, metrically identical and checked glyph by glyph. The docs room also uses it as the type of what you write, and embeds the letters a document uses into the PDFs it saves, which the OFL allows. Notice also at /vendor/pdfjs/standard_fonts/LICENSE_LIBERATION.
Foxit / PDFium base fonts — BSD-3-Clause
Copyright 2014 PDFium Authors
The other standard PDF faces PDF.js falls back to (ten files). Notice also at /vendor/pdfjs/standard_fonts/LICENSE_FOXIT.
LibRaw 0.22.1, compiled here to WebAssembly — CDDL-1.0
Copyright (C) 2008–2025 LibRaw LLC (Alex Tutubalin and Iliah Borg), building on Dave Coffin’s dcraw
Develops a raw photograph from the sensor data — CR2, NEF, ARW, DNG and the rest (930 KB). Built from unmodified upstream source by scripts/build-libraw.sh. CDDL requires that source be available to anyone who has the binary, and it is served from this site, with this site’s shim and the build script: /vendor/libraw/source/libraw-0.22.1-f67b8741-source.tar. Inside LibRaw: DCB demosaicing and FBDD denoising (Copyright (C) 2010 Jacek Gozdz, BSD-3-Clause), the X3F library (Copyright (c) 2010 Roland Karlsson, BSD-3-Clause; in the source, not compiled in) and pieces of the DNG SDK 1.4 (Copyright (c) 2005 Adobe Systems Incorporated, MIT); each licence in full at /vendor/libraw/LICENSE.
Emscripten runtime and musl libc 3.1.40 — MIT (Emscripten also NCSA)
Copyright (c) 2010-2014 Emscripten authors; Copyright © 2005-2020 Rich Felker, et al.
Compiled into every WebAssembly file this site serves (FFmpeg, LibRaw, the Tesseract core): the glue that runs C code in a browser, and the parts of the musl C library it uses. Both notices in full below and at /vendor/LICENSE-emscripten.txt.
libjpeg 9c, compiled into the LibRaw build above — IJG licence
Copyright (C) 1991–2018, Thomas G. Lane, Guido Vollbeding
This software is based in part on the work of the Independent JPEG Group.
Reads the JPEG-compressed sensor data some raw files carry. The Independent JPEG Group's licence asks for the sentence above in the documentation of anything that includes it; its full text is below and at /vendor/libraw/LICENSE.
DNG Specification — royalty-free patent licence from Adobe
This product includes DNG technology under license by Adobe.
Reading DNG files, the open raw format, is covered by the patent licence that comes with the published DNG Specification. It is free for anyone to use, and asks for the sentence above in the documentation and the source code of anything that reads or writes DNG. Its full text is below and at /vendor/libraw/LICENSE.

Tools a room may need

All of these are files on this site: your browser asks nobody else for them, and using one tells nobody anything. The largest — ONNX Runtime’s WebAssembly and the speech models — are kept in this site’s own file storage and sent from its own address, under /models/, the first time a tool needs them.

They are listed here because you should be able to see what your browser is being asked to run, and where it came from.

jsPDF 4.2.1 — MIT · served by this site
(c) 2010-2025 James Hall; (c) 2015-2025 yWorks GmbH
Writes PDF files. The file served carries its own plugins and a few libraries, each under its own licence: pako (MIT and Zlib), omggif (MIT, Dean McNamee), a WebP decoder (MIT, Dominik Homberger), Adobe’s 2008 JPEG encoder (BSD-3-Clause), and the RC4 cipher from FPDF (permissive). Two pieces jsPDF shipped without a licence, its RGB colour parser and its MD5 routine, have been replaced in the file served here with this site’s own code, which gives exactly the same results (the PDFs it writes are byte for byte the same). Every notice the file keeps is copied out at /vendor/lib/NOTICE-jspdf-bundle.txt.
PDF.js 6.3.289 — Apache-2.0 · served by this site
Copyright 2012 Mozilla Foundation
Reads PDF files. Served as PDF.js’s “legacy” build, made for browsers a year or two old, which bundles core-js 3.50 (MIT, Copyright Denis Pushkarev) to supply what they lack; core-js’s notice is kept in the files. Its character maps for Chinese, Japanese and Korean text (/vendor/pdfjs/cmaps/) are a separate work: Copyright 1990–2009 Adobe Systems Incorporated, BSD-3-Clause, full notice at /vendor/pdfjs/cmaps/LICENSE.
pdf-lib 1.17.1 — MIT · served by this site
Copyright (c) 2019 Andrew Dillon
Rewrites PDF files in the docs room: pages put in a new order, turned, taken out or added, forms filled, page numbers and signatures written on. The file served carries the libraries it depends on, each under its own licence: @pdf-lib/standard-fonts and @pdf-lib/upng (MIT), pako (MIT and Zlib) and tslib (Apache-2.0). All of their notices are at /vendor/lib/LICENSE-pdf-lib.txt.
fontkit 1.1.1, pdf-lib’s fork — MIT · served by this site
Copyright (c) 2014 Devon Govett; (c) 2019 Andrew Dillon
Reads a typeface so pdf-lib can put the characters you typed into a PDF — accents, Greek and Cyrillic included — using only the letters a document actually uses. The file served carries the small libraries it is built from, all MIT, and pako (MIT and Zlib); they are named at /vendor/lib/LICENSE-fontkit.txt.
tesseract.js 7.0.0 and tesseract.js-core 7.0.0 — Apache-2.0 · served by this site
Copyright the tesseract.js authors (Kevin Kwok, Guillermo Webster, Jerome Wu, Balearica and contributors)
Reads the words off scanned pages and photographs in the docs room (OCR), in a worker on this device; the picture never leaves it. The core is Tesseract (Apache-2.0) compiled to WebAssembly together with Leptonica (BSD-2-Clause), libjpeg (IJG), libpng (libpng licence), libtiff (libtiff licence), libwebp (BSD-3-Clause) and zlib (zlib licence); their notices are at /vendor/tesseract/NOTICE-core.txt. The worker script carries buffer and regenerator-runtime (MIT), ieee754 (BSD-3-Clause) and zlib.js (MIT), whose notices are at /vendor/tesseract/worker-7.0.0.min.js.LICENSE.txt, and also idb-keyval and wasm-feature-detect (Apache-2.0) and bmp-js (MIT), whose notices are at /vendor/tesseract/NOTICE-worker.txt and below. The core and the worker are WebAssembly built with Emscripten (see below).
Tesseract language data tessdata_best, integer, 4.0.0 — Apache-2.0 · served by this site, fetched on first use
Copyright the Tesseract OCR authors; packaged as @tesseract.js-data 1.0.0 (MIT)
English, German, French, Italian, Spanish, Portuguese and Dutch, each fetched from this site only when somebody first asks for text in that language to be read, then kept in the browser. See /vendor/tesseract/lang/NOTICE.txt.
Mammoth.js 1.12.3 — BSD-2-Clause · served by this site
Copyright (c) 2013, Michael Williamson
Reads Word documents. The file served carries the libraries it depends on, each under its own licence: JSZip (MIT, chosen from its MIT-or-GPL dual licence) and the pako inflater inside it (MIT and Zlib); bluebird, underscore, base64-js, @xmldom/xmldom, xmlbuilder, readable-stream, set-immediate-shim, isarray and browserify’s buffer and process (MIT); ieee754 (BSD-3-Clause); lop, option and dingbat-to-unicode, by the same author as Mammoth (BSD-2-Clause). Their notices are at /vendor/lib/NOTICE-mammoth-bundle.txt.
UTIF.js 3.1.0 — MIT · served by this site
Copyright (c) 2017 Photopea
Reads TIFF images. It carries a copy of PDF.js’s JPEG decoder (Copyright Mozilla Foundation, Apache-2.0) for JPEG-compressed TIFFs; both notices are at /vendor/lib/LICENSE-utif.txt.
SheetJS (xlsx) 0.18.5 — Apache-2.0 · served by this site
Copyright (C) 2012-present SheetJS LLC
Reads spreadsheets.
ONNX Runtime Web 1.30.0 — MIT · served by this site
Copyright (c) Microsoft Corporation
Runs the models in Convert, Photo and Video: background removal, subject and face finding, denoising, depth and upscaling. The WebAssembly is ONNX Runtime compiled together with other people’s open-source code; their notices are in Microsoft’s ThirdPartyNotices.txt, served beside it at /models/runtime/onnxruntime-web/1.30.0/ThirdPartyNotices.txt, with the licence at /models/runtime/onnxruntime-web/1.30.0/LICENSE.
Transformers.js 4.3.0 — Apache-2.0 · served by this site
Copyright (c) Hugging Face and contributors
Runs the speech model in Transcribe and in Video’s captions. The file served carries @huggingface/jinja 0.5.10 (MIT, Copyright (c) Hugging Face) and @huggingface/tokenizers 0.2.0 (Apache-2.0, Copyright (c) Hugging Face), and the JavaScript of the ONNX Runtime Web build below. Licence at /models/runtime/transformers/4.3.0/LICENSE.
ONNX Runtime Web 1.31.0-dev.20260914 (commit 8d85527a0) — MIT · served by this site
Copyright (c) Microsoft Corporation
The build Transformers.js 4.3.0 is made for, used only by the speech model. Its ThirdPartyNotices.txt and licence are served beside it, under /models/runtime/onnxruntime-web/1.31.0-dev.20260914-8d85527a0/.
Whisper tiny, base and small, ONNX builds by Xenova — MIT and Apache-2.0 · served by this site
Copyright (c) 2022 OpenAI
Turns speech into text: 41 MB (Fast), 77 MB (Careful) or 249 MB (Best), once, then kept by your browser. OpenAI’s repository says “Whisper’s code and model weights are released under the MIT License”; the ONNX conversions served here are Xenova’s, published under Apache-2.0. Both permit this use, and the full text of each is below; OpenAI’s notice is also served at /models/whisper/LICENSE-openai-whisper.
OPUS-MT Helsinki-NLP opus-mt-* and opus-mt-tc-big-*, ONNX builds by Xenova and onnx-community — Apache-2.0 and CC BY 4.0 · served by this site
Copyright (c) Language Technology Research Group, University of Helsinki (Jörg Tiedemann and the OPUS-MT team)
Translates subtitles in Transcribe: about 110 to 135 MB per language pair (303 MB and 537 MB for the two Turkish models), fetched only for the languages you choose, once, then kept by your browser. Most of the models are published under Apache-2.0. Five are published under the Creative Commons Attribution 4.0 International licence (CC BY 4.0): opus-mt-en-de, opus-mt-ru-en, opus-mt-zh-en, opus-mt-tc-big-tr-en and opus-mt-tc-big-en-tr, by Helsinki-NLP, at huggingface.co/Helsinki-NLP. Changes: converted to ONNX and quantised to 8-bit by Xenova and onnx-community; the weights are otherwise unchanged. Reference: Jörg Tiedemann and Santhosh Thottingal, “OPUS-MT — Building open translation services for the World”, EAMT 2020. Both licences are reproduced in full below.
M2M100 418M facebook/m2m100_418M, ONNX build by Xenova — MIT · served by this site
Copyright (c) Facebook, Inc. and its affiliates
Translates subtitles into the languages no OPUS-MT model writes, such as Japanese, Korean and Hindi: 640 MB, once, the first time one of them is chosen, then kept by your browser. Published by Meta under the MIT licence, reproduced below; converted to ONNX and quantised by Xenova.

The recording does not go with it. Getting the speech model is a download of a fixed file from this site, like getting a typeface. Your recording is read, decoded and transcribed inside the page, and there is no part of this site that could receive it.

The video converter, its licences and its patents

Video and sound are converted by two things working together, and which does what is decided by patents.

The formats still under patent pools that charge software makers — H.264 and H.265/HEVC among them — are decoded and encoded by your browser, with the codecs its maker ships and has licensed (WebCodecs). Where your browser cannot do one of them, the conversion is refused and says why; this site never does it in code of its own. AAC sound is always your browser’s too, decoded and encoded: this site has no AAC code of its own. Where a browser cannot write AAC (Safari before version 26, Firefox, and browsers on Linux and ChromeOS), a film’s sound is written as MP3 in an MP4 or MOV, or Opus in MKV or WebM, and a sound-only .m4a is declined with the formats that do work there.

Everything else is done by FFmpeg, in a build this site makes itself and serves from here: only royalty-free codecs and codecs whose patents have expired, and no GPL component, so it is licensed under the LGPL. Which those are was checked twice: against the patents themselves, and against the codecs Fedora ships in its own FFmpeg, whose list Red Hat’s lawyers keep. And since 12 October 2026, nothing with any patent or licence question left, even one decided in our favour: Dolby Digital Plus, Dolby TrueHD and Apple ProRes are not decoded here (your browser decodes them where it is licensed to, and a film with another soundtrack beside them converts with that one), and DTS-HD Master Audio plays its DTS core. DTS Express and Master Audio’s lossless layer are left out until 7 February 2027. FFmpeg can still copy an H.264 or AAC stream from one file into another — changing MKV into MP4, say — because copying moves the stream without decoding it.

Names of formats, programs and companies are used anywhere on this site only to say which files can be opened or made, and what a file will work with. They are trademarks of their owners, and none of those owners makes, endorses, sponsors or certifies this site, nor is it affiliated with any of them. Among them: Apple ProRes (Apple Inc.); Windows Media, Word, Excel and PowerPoint (Microsoft Corporation); Dolby, Dolby Digital, Dolby Digital Plus and Dolby TrueHD (Dolby Laboratories); DTS and DTS-HD (DTS, Inc.); RealMedia and RealAudio (RealNetworks, Inc.); ATRAC (Sony Group Corporation); Google Sheets and Google Slides (Google LLC).

The LGPL asks that anyone who receives the library can also get its source and rebuild it. The complete source of this build, with the changes made to it and the recipe that makes it, is served from this site: ffmpeg-core-rf7-source.tar.xz. The page loads the library as a file of its own, so a rebuilt one can take its place.

Tuned with

The music room’s UC Master plugins, and its ess and breath riders, were measured and tuned on parts of these recordings. None of them is on this site or in the plugins: what came out of the tuning is a table of settings in our own code.

E-GMD — the Expanded Groove MIDI Dataset, by Google LLC — CC BY 4.0
L. Callender, C. Hawthorne and J. Engel, “Improving Perceptual Quality of Drum Transcription with the Expanded Groove MIDI Dataset”, 2020. magenta.tensorflow.org/datasets/e-gmd
GuitarSet — by Q. Xi, R. Bittner, J. Pauwels, X. Ye and J. P. Bello — CC BY 4.0
“GuitarSet: A Dataset for Guitar Transcription”, ISMIR 2018. zenodo.org/records/3371780
Slakh2100 — by E. Manilow, G. Wichern, P. Seetharaman and J. Le Roux — CC BY 4.0
“Cutting Music Source Separation Some Slakh: A Dataset to Study the Impact of Training Data Quality and Quantity”, WASPAA 2019. zenodo.org/records/4599666
NSynth — by Google Inc. — CC BY 4.0
J. Engel et al., “Neural Audio Synthesis of Musical Notes with WaveNet Autoencoders”, 2017. magenta.tensorflow.org/datasets/nsynth
LibriSpeech — by V. Panayotov, G. Chen, D. Povey and S. Khudanpur — CC BY 4.0
“Librispeech: an ASR corpus based on public domain audio books”, ICASSP 2015. openslr.org/12 (the breath rider was tuned on a few of its speakers)
Vocadito — by R. Bittner, K. Pasalo, J. J. Bosch, G. Meseguer-Brocal and D. Rubinstein — CC BY 4.0
“vocadito: A dataset of solo vocals with f0, note, and lyric annotations”, 2021. zenodo.org/record/5578807 (the ess and breath riders were tuned on its singers)

Typefaces

All of them are under the SIL Open Font License 1.1, which is what allows this site to serve them itself. It does: they are files here, not a request to anybody else, so opening a page tells no third party that you did.

Outfit — OFL 1.1
Copyright 2021 The Outfit Project Authors
Hanken Grotesk — OFL 1.1
Copyright 2021 The Hanken Grotesk Project Authors
JetBrains Mono — OFL 1.1
Copyright 2020 The JetBrains Mono Project Authors
Caveat 2.000 — OFL 1.1 · served by this site
Copyright 2014 The Caveat Project Authors (github.com/googlefonts/caveat)
The handwriting a typed signature is set in, in the docs room. It is fetched from this site only when you open the Type tab of the signing sheet, and the signature goes onto the page as a picture of it. The variable TrueType file is served as published; its licence is also at /fonts/caveat-OFL.txt.
Archivo — OFL 1.1 · served by this site
Copyright 2020 The Archivo Project Authors (github.com/Omnibus-Type/Archivo)
The figures and titles of the music room's Swiss precision look. A latin cut of the variable font (weights 400 to 700, every width); its licence is also at /fonts/archivo-OFL.txt.
Barlow and Barlow Condensed — OFL 1.1 · served by this site
Copyright 2017 The Barlow Project Authors (github.com/jpt/barlow)
For the music room's Functional industrial look. Latin cuts of four weights and two condensed weights; the licence is also at /fonts/barlow-OFL.txt.

The licence texts

Each is reproduced in full, exactly as published.

MIT License — ffmpeg.wasm, jsPDF and the MIT libraries inside it, pdf-lib, fontkit, @tesseract.js-data, UTIF.js, Mammoth.js’s MIT libraries, the tesseract.js worker’s MIT libraries, core-js, ONNX Runtime Web, @huggingface/jinja, YuNet, Whisper (as published by OpenAI), M2M100 418M (as published by Meta), OKLab

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  f. Licensed Material means the artistic or literary work, database,
     or other material to which the Licensor applied this Public
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  g. Licensed Rights means the rights granted to You subject to the
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     Licensed Material and that the Licensor has authority to license.

  h. Licensor means the individual(s) or entity(ies) granting rights
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  i. Share means to provide material to the public by any means or
     process that requires permission under the Licensed Rights, such
     as reproduction, public display, public performance, distribution,
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  j. Sui Generis Database Rights means rights other than copyright
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  k. You means the individual or entity exercising the Licensed Rights
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Section 2 -- Scope.

  a. License grant.

       1. Subject to the terms and conditions of this Public License,
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            b. produce, reproduce, and Share Adapted Material.

       2. Exceptions and Limitations. For the avoidance of doubt, where
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          License does not apply, and You do not need to comply with
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       3. Term. The term of this Public License is specified in Section
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       4. Media and formats; technical modifications allowed. The
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          all media and formats whether now known or hereafter created,
          and to make technical modifications necessary to do so. The
          Licensor waives and/or agrees not to assert any right or
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          (4) never produces Adapted Material.

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For the avoidance of doubt, this Section 4 supplements and does not
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Section 6 -- Term and Termination.

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  b. Where Your right to use the Licensed Material has terminated under
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       2. upon express reinstatement by the Licensor.

     For the avoidance of doubt, this Section 6(b) does not affect any
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  c. For the avoidance of doubt, the Licensor may also offer the
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  d. Sections 1, 5, 6, 7, and 8 survive termination of this Public
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Section 8 -- Interpretation.

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     be made without permission under this Public License.

  b. To the extent possible, if any provision of this Public License is
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  c. No term or condition of this Public License will be waived and no
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  d. Nothing in this Public License constitutes or may be interpreted
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MIT / University of Illinois NCSA — Emscripten; MIT — musl libc

Emscripten -- MIT or University of Illinois/NCSA

Emscripten is available under 2 licenses, the MIT license and the
University of Illinois/NCSA Open Source License.

Both are permissive open source licenses, with little if any
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The reason for offering both is that (1) the MIT license is
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License allows Emscripten's code to be integrated upstream into
LLVM, which uses that license, should the opportunity arise.

The full text of both licenses follows.

==============================================================================

Copyright (c) 2010-2014 Emscripten authors, see AUTHORS file.

Permission is hereby granted, free of charge, to any person obtaining a copy
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==============================================================================

Copyright (c) 2010-2014 Emscripten authors, see AUTHORS file.
All rights reserved.

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    nor the names of its contributors may be used to endorse
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    written permission. 

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SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.

==============================================================================

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
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        all copies or substantial portions of the Software.

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        FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
        IN THE SOFTWARE.
    """

The musl libc project is bundled in this repo, and it has the MIT license, see
system/lib/libc/musl/COPYRIGHT

The third_party/ subdirectory contains code with other licenses. None of it is
used by default, but certain options use it (e.g., the optional closure compiler
flag will run closure compiler from third_party/).
==============================================================================
musl libc (system/lib/libc/musl/COPYRIGHT) -- MIT

musl as a whole is licensed under the following standard MIT license:

----------------------------------------------------------------------
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.
----------------------------------------------------------------------

Authors/contributors include:

A. Wilcox
Ada Worcester
Alex Dowad
Alex Suykov
Alexander Monakov
Andre McCurdy
Andrew Kelley
Anthony G. Basile
Aric Belsito
Arvid Picciani
Bartosz Brachaczek
Benjamin Peterson
Bobby Bingham
Boris Brezillon
Brent Cook
Chris Spiegel
Clément Vasseur
Daniel Micay
Daniel Sabogal
Daurnimator
David Carlier
David Edelsohn
Denys Vlasenko
Dmitry Ivanov
Dmitry V. Levin
Drew DeVault
Emil Renner Berthing
Fangrui Song
Felix Fietkau
Felix Janda
Gianluca Anzolin
Hauke Mehrtens
He X
Hiltjo Posthuma
Isaac Dunham
Jaydeep Patil
Jens Gustedt
Jeremy Huntwork
Jo-Philipp Wich
Joakim Sindholt
John Spencer
Julien Ramseier
Justin Cormack
Kaarle Ritvanen
Khem Raj
Kylie McClain
Leah Neukirchen
Luca Barbato
Luka Perkov
M Farkas-Dyck (Strake)
Mahesh Bodapati
Markus Wichmann
Masanori Ogino
Michael Clark
Michael Forney
Mikhail Kremnyov
Natanael Copa
Nicholas J. Kain
orc
Pascal Cuoq
Patrick Oppenlander
Petr Hosek
Petr Skocik
Pierre Carrier
Reini Urban
Rich Felker
Richard Pennington
Ryan Fairfax
Samuel Holland
Segev Finer
Shiz
sin
Solar Designer
Stefan Kristiansson
Stefan O'Rear
Szabolcs Nagy
Timo Teräs
Trutz Behn
Valentin Ochs
Will Dietz
William Haddon
William Pitcock

Portions of this software are derived from third-party works licensed
under terms compatible with the above MIT license:

The TRE regular expression implementation (src/regex/reg* and
src/regex/tre*) is Copyright © 2001-2008 Ville Laurikari and licensed
under a 2-clause BSD license (license text in the source files). The
included version has been heavily modified by Rich Felker in 2012, in
the interests of size, simplicity, and namespace cleanliness.

Much of the math library code (src/math/* and src/complex/*) is
Copyright © 1993,2004 Sun Microsystems or
Copyright © 2003-2011 David Schultz or
Copyright © 2003-2009 Steven G. Kargl or
Copyright © 2003-2009 Bruce D. Evans or
Copyright © 2008 Stephen L. Moshier or
Copyright © 2017-2018 Arm Limited
and labelled as such in comments in the individual source files. All
have been licensed under extremely permissive terms.

The ARM memcpy code (src/string/arm/memcpy.S) is Copyright © 2008
The Android Open Source Project and is licensed under a two-clause BSD
license. It was taken from Bionic libc, used on Android.

The AArch64 memcpy and memset code (src/string/aarch64/*) are
Copyright © 1999-2019, Arm Limited.

The implementation of DES for crypt (src/crypt/crypt_des.c) is
Copyright © 1994 David Burren. It is licensed under a BSD license.

The implementation of blowfish crypt (src/crypt/crypt_blowfish.c) was
originally written by Solar Designer and placed into the public
domain. The code also comes with a fallback permissive license for use
in jurisdictions that may not recognize the public domain.

The smoothsort implementation (src/stdlib/qsort.c) is Copyright © 2011
Valentin Ochs and is licensed under an MIT-style license.

The x86_64 port was written by Nicholas J. Kain and is licensed under
the standard MIT terms.

The mips and microblaze ports were originally written by Richard
Pennington for use in the ellcc project. The original code was adapted
by Rich Felker for build system and code conventions during upstream
integration. It is licensed under the standard MIT terms.

The mips64 port was contributed by Imagination Technologies and is
licensed under the standard MIT terms.

The powerpc port was also originally written by Richard Pennington,
and later supplemented and integrated by John Spencer. It is licensed
under the standard MIT terms.

All other files which have no copyright comments are original works
produced specifically for use as part of this library, written either
by Rich Felker, the main author of the library, or by one or more
contibutors listed above. Details on authorship of individual files
can be found in the git version control history of the project. The
omission of copyright and license comments in each file is in the
interest of source tree size.

In addition, permission is hereby granted for all public header files
(include/* and arch/*/bits/*) and crt files intended to be linked into
applications (crt/*, ldso/dlstart.c, and arch/*/crt_arch.h) to omit
the copyright notice and permission notice otherwise required by the
license, and to use these files without any requirement of
attribution. These files include substantial contributions from:

Bobby Bingham
John Spencer
Nicholas J. Kain
Rich Felker
Richard Pennington
Stefan Kristiansson
Szabolcs Nagy

all of whom have explicitly granted such permission.

This file previously contained text expressing a belief that most of
the files covered by the above exception were sufficiently trivial not
to be subject to copyright, resulting in confusion over whether it
negated the permissions granted in the license. In the spirit of
permissive licensing, and of not having licensing issues being an
obstacle to adoption, that text has been removed.

The libraries inside Mammoth.js, their own notices — bluebird, underscore, lop, option, dingbat-to-unicode, process, set-immediate-shim

bluebird 3.4.7 -- MIT

The MIT License (MIT)

Copyright (c) 2013-2015 Petka Antonov

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
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all copies or substantial portions of the Software.

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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.
==============================================================================
underscore 1.13.1 -- MIT

Copyright (c) 2009-2021 Jeremy Ashkenas, Julian Gonggrijp, and DocumentCloud and Investigative Reporters & Editors

Permission is hereby granted, free of charge, to any person
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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.
==============================================================================
lop -- BSD-2-Clause

Copyright (c) 2013, Michael Williamson
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 THE COPYRIGHT OWNER 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.
==============================================================================
option -- BSD-2-Clause

Copyright (c) 2013, Michael Williamson
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 THE COPYRIGHT OWNER 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.
==============================================================================
dingbat-to-unicode -- BSD-2-Clause

Copyright (c) 2021, Michael Williamson
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 THE COPYRIGHT OWNER 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.
==============================================================================
process (browserify's _process) -- MIT

(The MIT License)

Copyright (c) 2013 Roman Shtylman <shtylman@gmail.com>

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.
==============================================================================
set-immediate-shim -- MIT

MIT License

Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)

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.

The libraries inside the tesseract.js worker, their own notices — idb-keyval, wasm-feature-detect, bmp-js

idb-keyval -- Apache-2.0

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.
==============================================================================
wasm-feature-detect -- Apache-2.0

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      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 2017 Google Inc.

   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.
==============================================================================
bmp-js -- MIT

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.

Digital Negative (DNG) Specification patent licence — Adobe

This product includes DNG technology under license by Adobe.

Digital Negative (DNG) Specification patent license
Source: https://helpx.adobe.com/camera-raw/digital-negative.html (retrieved 2026-10-08)

Adobe is the publisher of the Digital Negative (DNG) Specification describing an image file format for storing camera raw information used in a wide range of hardware and software. Adobe provides the DNG Specification to the public for the purpose of encouraging implementation of this file format in a compliant manner. This document is a patent license granted by Adobe to individuals and organizations that desire to develop, market, and/or distribute hardware and software that reads and/or writes image files compliant with the DNG Specification.

Grant of rights

Subject to the terms below and solely to permit the reading and writing of image files that comply with the DNG Specification, Adobe hereby grants all individuals and organizations the worldwide, royalty-free, nontransferable, nonexclusive right under all Essential Claims to make, have made, use, sell, import, and distribute Compliant Implementations.

"Compliant Implementation" means a portion of a software or hardware product that reads or writes computer files compliant with the DNG Specification.

"DNG Specification" means any version of the Adobe DNG Specification made publicly available by Adobe (for example, version 1.0.0.0 dated September 2004).

"Essential Claim" means a claim of a patent, whenever and wherever issued, that Adobe has the right to license without payment of royalty or other fee that is unavoidably infringed by implementation of the DNG Specification. A claim is unavoidably infringed by the DNG Specification only when it is not possible to avoid infringing when conforming with such specification because there is no technically possible noninfringing alternative for achieving such conformity. Essential Claim does not include a claim that is infringed by implementation of (a) enabling technology that may be necessary to make or use any product or portion thereof that complies with the DNG Specification but is not itself expressly set forth in the DNG Specification (for example, compiler technology and basic operating system technology), (b) technology developed elsewhere and merely incorporated by reference in the DNG Specification, or (c) the implementation of file formats other than DNG.

Revocation

Adobe may revoke the rights granted above to any individual or organizational licensee in the event that such licensee or its affiliates brings any patent action against Adobe or its affiliates related to the reading or writing of files that comply with the DNG Specification.

Any Compliant Implementation distributed under this license must include the following notice displayed in a prominent manner within its source code and documentation: "This product includes DNG technology under license by Adobe."

No warranty

The rights granted herein are provided on an as-is basis without warranty of any kind, including warranty of title or noninfringement. Nothing in this license shall be construed as (a) requiring the maintenance of any patent, (b) a warranty or representation as to the validity or scope of any patent, (c) a warranty or representation that any product or service will be free from infringement of any patent, (d) an agreement to bring or prosecute actions against any infringers of any patent, or (e) conferring any right or license under any patent claim other than Essential Claims.

Reservation of rights

All rights not expressly granted herein are reserved.

SIL Open Font License 1.1 — Outfit, Hanken Grotesk, JetBrains Mono, Liberation Sans, Caveat, Archivo, Barlow

SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007

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:
https://openfontlicense.org


-----------------------------------------------------------
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.

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