← Document to Audio

Open-source licenses and source

Kingy Document to Audio 2.0.0. Copyright 2026 Kingy AI. The application source is available under GPL-3.0-or-later. It is provided without warranty. Third-party copyrights and licenses remain in force.

Download this release’s source and build inputs (ZIP). Includes the application, lockfile, public runtime files, license notices and build instructions. Document uploads, generated audio, credentials and production backups are excluded.

Speech runtime

The existing Kingy Kokoro browser runtime was retained, with relative WebAssembly paths and single-thread execution. Runtime provenance and file hashes. Speech model and voice weights are downloaded directly from Kokoro 82M ONNX (Apache-2.0).

Local audio encoder

FFmpeg WASM wrapper 0.12.15 is MIT; the unmodified single-thread core 0.12.10 is GPL-2.0-or-later. The app encodes MP3 and AAC locally. Release source, core build configuration, build scripts, and upstream source archives:

Document and OCR libraries

PDF.js 4.10.38 (Apache-2.0), Mammoth 1.10.0 and fflate 0.8.2 (MIT), Tesseract.js 6.0.1 and Tesseract.js-core (Apache-2.0). English trained data comes from the Tesseract project’s 4.0 distribution. Dependency source versions and upstream repository locations are pinned in the downloadable package-lock.json; the bundled notices follow.

PackageLicenseNotices
@napi-rs/canvas 0.1.100MITLICENSE
@types/estree 1.0.9MITLICENSE
@xmldom/xmldom 0.8.15MITLICENSE
argparse 1.0.10MITLICENSE
base64-js 1.5.1MITLICENSE
bluebird 3.4.7MITLICENSE
bmp-js 0.1.0MITLICENSE
core-util-is 1.0.3MITLICENSE
dingbat-to-unicode 1.0.2BSD-2-ClauseLICENSE
duck 0.1.12BSDLICENSE
esbuild 0.25.12MITLICENSE.md
fdir 6.5.0MITLICENSE
fflate 0.8.2MITLICENSE
immediate 3.0.6MITLICENSE.txt
inherits 2.0.4ISCLICENSE
is-url 1.2.4MITLICENSE-MIT
jszip 3.10.2(MIT OR GPL-3.0-or-later)LICENSE.markdown
lie 3.3.0MITlicense.md
lop 0.4.2BSD-2-ClauseLICENSE
mammoth 1.10.0BSD-2-ClauseLICENSE
nanoid 3.3.20MITLICENSE
node-fetch 2.7.0MITLICENSE.md
opencollective-postinstall 2.0.3MITLICENSE
option 0.2.4BSD-2-ClauseLICENSE
pako 1.0.11(MIT AND Zlib)LICENSE
path-is-absolute 1.0.1MITlicense
pdfjs-dist 4.10.38Apache-2.0LICENSE
picocolors 1.1.1ISCLICENSE
picomatch 4.0.7MITLICENSE
postcss 8.5.29MITLICENSE
process-nextick-args 2.0.1MITlicense.md
readable-stream 2.3.8MITLICENSE
regenerator-runtime 0.13.11MITLICENSE
rollup 4.64.0MITLICENSE.md
safe-buffer 5.1.2MITLICENSE
setimmediate 1.0.5MITLICENSE.txt
source-map-js 1.2.2BSD-3-ClauseLICENSE
sprintf-js 1.0.3BSD-3-ClauseLICENSE
string_decoder 1.1.1MITLICENSE
tesseract.js 6.0.1Apache-2.0LICENSE.md
tesseract.js-core 6.1.2Apache-2.0LICENSE
tinyglobby 0.2.17MITLICENSE
underscore 1.13.8MITLICENSE
util-deprecate 1.0.2MITLICENSE
vite 6.3.5MITLICENSE.md
wasm-feature-detect 1.9.0Apache-2.0LICENSE
webidl-conversions 3.0.1BSD-2-ClauseLICENSE.md
whatwg-url 5.0.0MITLICENSE.txt
xmlbuilder 10.1.1MITLICENSE
zlibjs 0.3.1MITLICENSE