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Video Compressor

Shrink large videos for Slack, email, and the web, on your own device.

Free foreverNo uploadsNo account
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01 · Real-world fits

Common use cases

  • Getting a screen recording under Gmail's 25 MB attachment limit
  • Shrinking phone footage before sending it in a chat app that recompresses or rejects large files
  • Making a smaller WebM for a website background or product demo
  • Reducing a client walkthrough before dropping it into Slack, Notion, or a shared drive
02 · The honest pitch

Why Video Compressor?

It runs ffmpeg, the encoder behind most video software, as WebAssembly inside your browser tab, so the video is never sent anywhere. The trade-off is speed: browser ffmpeg runs single-threaded and is slower than a desktop app. For long or 4K videos a desktop encoder is faster; for a clip you'd rather not upload, this keeps it on your machine.

03 · Edge cases

Frequently asked questions

No. The video is read and re-encoded in your browser. On first use the tool downloads the ffmpeg engine itself from unpkg.com, a public code CDN; that's a download of the program, and your video never goes the other way. You can watch this in your browser's Network tab.