Which preset should I use?

Start with balanced; pick smaller if you need a tighter size limit.

Is Video Compressor private?

Yes. Video processing stays on your device.

Yes. Compress video online free with Korisa.

Compress video online to reduce file size for sharing. Free private video compressor in your browser.

Video

Processed in your browser with FFmpeg.wasm. The first run downloads the engine (~31 MB); media never leaves your device.

Reduce file size for sharing and uploads

Drop a video to compress

Exports a smaller H.264 MP4

Quality vs file size

First run downloads the FFmpeg engine (~31 MB). Compression can take a while on long or 4K clips.

Shrink MP4 and other videos for uploads, email, and messaging with quality presets.

Compression runs in-browser with FFmpeg.wasm for privacy.

Which preset should I use?: Start with balanced; pick smaller if you need a tighter size limit.
Is Video Compressor private?: Yes. Video processing stays on your device.
Is it free?: Yes. Compress video online free with Korisa.