Video Trimmer & Compressor
Cuts a video to a time range, optionally removes the audio track and recompresses to a chosen quality level, all with ffmpeg.wasm in your browser. Fast lossless trimming is used when no re-encode is needed.
Runs 100% in your browser — your files never leave your device.
Read the full guide to this tool
Notes
- The conversion engine (ffmpeg compiled to WebAssembly, about 25 MB) is downloaded from a CDN on first use, then cached by your browser. H.264, VP8/VP9, MPEG-4 and most common codecs are supported; AV1 is not.
- Lossless trim cuts at the nearest keyframe, so the actual start can shift by up to a couple of seconds; re-encode mode is frame-exact but slower.
- Everything runs locally in your browser; your files are never uploaded to any server.
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