Compress Video — Free & Private
Reduce video file size without noticeable quality loss. Runs 100% in your browser via WebAssembly.
Drag & drop files here, or click to browse
Files are processed entirely on your device and are never uploaded to any server.
or import from URL
Frequently Asked Questions about video compression
What video formats are supported?
MP4, MOV, WebM, AVI, and MKV are supported as input. The output is always MP4 for maximum compatibility.
How much can the file size be reduced?
Compression ratio depends on the original video. Typical results are 40–70% smaller while maintaining acceptable visual quality.
Will there be quality loss?
Yes — video compression uses lossy encoding. Use the quality slider to control the trade-off between file size and visual quality.
Are my videos kept private?
Yes. Video compression runs entirely in your browser using FFmpeg WebAssembly — your files never leave your device.
Why does video processing take longer than images?
Video files contain much more data and require frame-by-frame processing. Compression time depends on the video length and your device's processor speed.