Open-source licenses
Ethical Tube is built with open-source software. These are the main third-party projects shipped to your browser by the recorder and file converters, with their licenses and source code.
- Source links
- Included below
- Converter uploads
- None
- Last reviewed
- October 2026
Third-party software
Media conversion
FFmpeg.wasm JavaScript packages
License: MIT
Source codeFFmpeg WebAssembly core
License: GPL-2.0-or-later
The downloadable core contains a GPL build of FFmpeg. The linked repository provides the corresponding build source.
Source codeMediabunny and encoder add-ons
License: MPL-2.0
Source codefix-webm-duration
License: MIT
Source code
Third-party software
Images and OCR
heic-to
License: MIT; bundled libheif is LGPL-3.0
HEIC decoding uses libheif compiled to WebAssembly.
Source codejSquash AVIF and WebP codecs
License: Apache-2.0
Source codegifenc
License: MIT
Source codegifuct-js
License: MIT
Source codeUPNG.js and UTIF.js
License: MIT
Source codeImageTracer.js
License: The Unlicense
Source codereact-easy-crop
License: MIT
Source codeTesseract.js and tesseract.js-core
License: Apache-2.0
Source codeEnglish OCR language data
License: MIT
Source code
Third-party software
PDF, documents, and Office
PDF.js
License: Apache-2.0
Source codepdf-lib
License: MIT
Source codeLibreOffice and libreoffice-converter
License: MPL-2.0
The browser converter includes a WebAssembly build of LibreOffice.
Source codedocx
License: MIT
Source codeMammoth
License: BSD-2-Clause
Source codeMarked
License: MIT
Source codeTurndown and turndown-plugin-gfm
License: MIT
Source codepdfmake and html-to-pdfmake
License: MIT
Source codePptxGenJS
License: MIT
Source code
Third-party software
Data and archives
Papa Parse
License: MIT
Source codefast-xml-parser
License: MIT
Source codeyaml
License: ISC
Source coderead-excel-file and write-excel-file
License: MIT
Source codefflate
License: MIT
Source codelibarchive.js
License: MIT
Its WebAssembly build includes libarchive and the compression libraries documented by that project.
Source code
Third-party software
Website framework
Next.js
License: MIT
Source codeReact
License: MIT
Source code