Video Compressor — Shrink Video Files in Your Browser
Shrink a video without sending it anywhere — pick how much to cut, and the smaller MP4 is ready to download. All processing happens in your browser tab.
Video Compressor
Shrink a video file — 100% in your browser
First run downloads the local engine (~31 MB) once, then your browser caches it for next time. Processing speed depends on your device — short clips are quickest, and longer videos simply take longer. Everything happens in this tab; the network stays empty the whole time.
How to compress a video in your browser
- Choose a video — MP4, WebM or MOV all work.
- Pick the target size. "Balanced" keeps the picture clean while cutting real bytes; "Smallest file" pushes the size down as far as it goes.
- Hit compress and watch the progress bar. The engine encodes inside your tab, so a 30-second clip on a decent laptop finishes in well under a minute.
- Preview the result, check the saved percentage, and download the smaller MP4.
The output is H.264 in an MP4 container with a fast-start flag, so it plays immediately in browsers, on phones, and in WhatsApp or email. Longer videos take proportionally longer — this is genuine encoding, not a trick, and it is exactly why it works offline.
Why it's private
Video is the file you least want on a stranger's server — family clips, client recordings, screen captures with data on them. "Free" compressors make you upload the whole thing first. Here the ffmpeg engine encodes inside your tab; the network stays empty and the smaller MP4 downloads straight from your browser.
Who needs this
Anyone hitting an upload or message-size limit, people making a clip small enough for WhatsApp or email, and anyone who refuses to hand a private recording to a server just to cut its size.