Open-source file converters

7 file converters whose code is public under an OSI-approved license, rated for privacy with evidence. Picks first, then by score.

1. ConvertX Grade B

   A self-hosted web app for converting files between over a thousand formats, using converters such as FFmpeg, LibreOffice, Pandoc and ImageMagick, with password-protected accounts.

   AGPL-3.0. Source code

2. FFmpeg Grade B

   Cross-platform command-line tools and libraries to record, convert and stream audio and video, supporting a wide range of codecs and formats.

   LGPL-2.1 or later, with optional GPL-2.0 or later components. Source code

3. File Converter Grade B

   A Windows tool that converts and compresses audio, video, image and document files from the File Explorer context menu, using customizable presets.

   GPL-3.0. Source code

4. HandBrake Grade B

   A video transcoder that converts video from nearly any format to modern codecs such as H.264, H.265 and AV1, with presets for common devices.

   Mostly GPL-2.0, with some GPL-2.0-or-later and LGPL-2.1 files. Source code

5. Pandoc Grade B

   A command-line tool and Haskell library that converts documents between markup formats such as Markdown, HTML, LaTeX, DOCX, EPUB and PDF.

   GPL-2.0 or later. Source code

6. Switcheroo Grade B

   A GNOME app for converting and manipulating images, such as changing format, resizing and compressing, built on ImageMagick.

   GPL-3.0. Source code

7. VERT Grade B

   Web-based file converter for images, audio and documents that runs locally in the browser using WebAssembly. Video conversions are processed on the VERT server, and the app can be self-hosted.

   AGPL-3.0. Source code

Compare all 9 file converters, open source or not.