Compress video
Lower the bitrate to shrink file size.
Drop files here
or click to browse - files stay on your device
Max file size: 500 MB
About this tool
Shrink large video files for email, messaging or web upload - without sending them to a stranger's server. Compression runs in your browser via FFmpeg compiled to WebAssembly, the same engine professional video tools use.
Features
- MP4, WebM, MOV input and output
- Quality presets (high / balanced / small)
- Optional resolution downscaling
- Audio kept in sync
How to use it
- Drop a video.
- Pick a quality preset.
- Wait while FFmpeg processes locally, then download.
🔒 100% private
Everything happens inside your browser using JavaScript and WebAssembly. Your files are never uploaded to a server, never stored, and never seen by us.
Frequently asked questions
Why is it slower than online tools?
Online tools use beefy GPU servers. Your browser uses your CPU - slower for big files, but completely private.
Will quality drop a lot?
The "balanced" preset gives ~50-70% smaller files with very little visible quality difference.