SwissKnifeConvert a file. Keep it yours.
Image, audio and video conversion inside the browser.
WebAssembly / FFmpeg / Local-first
The question
Why should a simple conversion require uploading a personal file to a service?
The product decision
Make the processing boundary the product: files enter a local queue, are converted in the tab and are downloaded by the visitor. No conversion server.
In practice
- Canvas for images; FFmpeg WebAssembly for audio and video.
- A visible queue, progress and downloadable results.
- The processing engine is served with the application.
What to know
Browser memory limits matter, especially for large videos. Supported media formats are explicit; this is not a universal document converter.