Video Converter
Convert video files between MP4, WebM, MOV, AVI, and MKV using WebAssembly. Runs entirely in your browser — your video is never uploaded to a server.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
How it works
- Choose a video file and the format you want to convert it to.
- Click Convert — the first conversion downloads a ~30MB conversion engine (WebAssembly), which is then cached for later use.
- Once it's done, the converted file downloads automatically.
Conversion runs entirely on your device using WebAssembly — there's no upload and no server involved, so it's limited by your device's processing power. Larger files and longer videos take longer, and this works best for clips up to a few hundred MB.