Convert MP4, WebM, MOV, AVI, MKV, FLV, and WMV — all 10 video converters run in your browser using FFmpeg.wasm. Extract audio, create GIFs, or re-encode for the web. No upload, no signup.
✓ No upload — files stay on your device✓ Free forever✓ Powered by FFmpeg.wasm
All conversions use FFmpeg.wasm running locally. Conversion speed depends on file size and your device's CPU.
Frequently Asked Questions
Video conversions use FFmpeg.wasm, a ~32 MB library that downloads once on first use. After that it's cached in your browser and future conversions start immediately. Image and audio conversions have no download delay.
No. FFmpeg runs entirely in your browser. Your video files never leave your device — not even temporarily.
50 MB. Video conversion is memory-intensive — large files may be slow on weaker devices. For best performance, use a desktop or laptop with at least 4 GB RAM.
Safari on recent iOS (16.4+) supports FFmpeg.wasm via SharedArrayBuffer. Older iOS versions may not support video conversion. Image and audio conversions work on all browsers.