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.
Drop files here
Max 15 MB
First use requires a one-time setup to enable private, local processing. Your files never leave your device.
How to Compress Video Online Free
Compress MP4, MOV, and AVI video files free in your browser using FFmpeg WebAssembly. Reduce file size by 50–90% while keeping the video watchable. All processing runs locally on your device — files are never uploaded to any server. No account needed.
Select your video
Choose an MP4, MOV, or AVI file. Large files are supported up to 2GB.
Choose quality
Select a preset (Less, Recommended, or Extreme) and optionally change the resolution.
Download compressed video
Once processing is complete, download your optimized video file instantly.
100% Private
Your video never leaves your device or browser. No privacy leaks.
Instant Processing
No upload wait. Compression happens right on your device in seconds.
Free Forever
No account, no limits, no cost. Just a fast and clean utility tool.
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 on your device. Nothing is ever uploaded to a server.
Instant Speed
No upload or download wait. 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.