Compress Video Online Free — Reduce MP4 & MOV File Size
Professional-grade compression that runs entirely in your browser. No uploads to servers, no privacy leaks, just instant results powered by FFmpeg WebAssembly.
Compression Settings
Drop your video here
Supports MP4, MOV, WEBM, AVI up to 2 GB
First-time use requires downloading the FFmpeg WebAssembly engine (~30 MB). Processing runs entirely in your browser — nothing is uploaded.
How It Works
Upload
Drag & drop or browse your file. It stays in your browser — nothing is uploaded.
Compress
Our local algorithms process your file at your chosen quality setting.
Download
Save your optimized file instantly. No waiting, no server queues.
Supported Formats
Why Simple Compressor?
100% Private
Files are processed locally using WebAssembly. They never leave your device.
Instant Speed
No upload/download cycle. Speed is limited only by your hardware, not your internet.
No Quality Loss
Smart algorithms target invisible data, preserving visual and auditory fidelity.
No Signup Required
No account, no limits, no watermarks. Just a clean utility tool.
Any Device
Works in any modern browser on desktop, tablet, or mobile.