Convert between MP4, WebM, MKV, GIF, M4A, WAV, and more—locally via ffmpeg.wasm. 100% free, nothing uploaded.

Convert common videos to MP4 for playback and sharing—local ffmpeg.wasm. 100% free.

Convert iPhone / Mac MOV files to MP4. 100% free, runs in your browser.

Convert MKV to MP4 for wider player support. 100% free.

Convert WebM downloads to MP4. 100% free.

Convert legacy AVI to MP4. 100% free.

Export WebM for web embedding. 100% free.

Export MKV container format. 100% free.

Cut a clip by start/end time; stream copy or re-encode. 100% free, browser-local processing.

Reduce resolution and CRF to shrink file size. 100% free, runs in your browser.

Turn video into an animated GIF with adjustable FPS and width. 100% free, local processing.

Export M4A (AAC) or WAV audio track from video. 100% free, nothing uploaded.