Compress a video
Pick best quality, balanced or max compression and download a lighter MP4. You'll see the original size, the new one and the real savings.
Your files never leave your device
How to compress a video
- 1
Upload the video
MP4, MOV, WEBM, MKV or AVI.
- 2
Pick a mode
Best quality, balanced or max compression.
- 3
Download the MP4
With the original size, the new one and the real savings.
Why use this tool
Three honest modes
You choose the quality/size trade-off — no magic promises.
Real results
You'll see the exact size achieved and the reduction percentage.
Private
The video never leaves your device: ffmpeg runs in your browser.
Real engine
ffmpeg, the industry standard, compiled to WebAssembly and self-hosted.
Frequently asked questions
How much smaller will my video get?
It depends on the source: camera and screen recordings typically drop 40–80% in balanced mode. The exact result is shown when it finishes — no made-up estimates.
Why does it take a while?
The video is re-encoded frame by frame in your browser (single-threaded). A one-minute video can take a few minutes depending on your machine; in exchange, nothing is uploaded anywhere.
Which mode should I pick?
Balanced for everyday use; best quality if you'll edit afterwards; max compression for messaging apps (caps at 1280 px and 30 fps).
Is there a size limit?
The site-wide limit is 250 MB per file, with a warning from 100 MB: everything is processed in your browser's memory.