Video Compressor

Compress MP4, MOV and WebM videos to a smaller file size for WhatsApp, email, Discord or the web. Private: runs in your browser. 🔒 Runs in your browser

How to use the Video Compressor

  1. Drop your video in the box or click "Choose files" (MP4, MOV, WebM or MKV).
  2. Adjust the options (start and end time, quality, size or format) if you need to.
  3. Click the button: the video is processed in your browser with a progress bar.
  4. Preview the result and click Download. Your video never leaves your device.

About this tool

Compress MP4, MOV and WebM videos to a smaller file size for WhatsApp, email, Discord or the web. Private: runs in your browser. It is part of the free Video Tools collection on Online Tools Harbor. Everything happens locally in your browser, so it is fast and private.

Frequently asked questions

Is there a file size limit or watermark?

No watermark and no sign-up. The video is processed in your browser memory, so very large files (several GB) depend on your device; 1–2 GB usually works on a computer.

Which browsers are supported?

Recent Chrome, Edge, Firefox and Safari. Processing uses WebCodecs and your graphics hardware, so it is fast. If a format is not supported, try Chrome or an MP4 file.

Why is it fast?

Nothing is uploaded: the video is decoded and encoded on your own device, using hardware acceleration when available.

Is the Video Compressor free?

Yes. The Video Compressor is completely free to use, with no sign-up and no limits on normal use.

Is my data safe?

Yes. This tool runs entirely in your web browser using JavaScript. Your files are never uploaded to our servers.

Does it work on mobile?

Yes, it works in any modern browser on phones, tablets and computers. No app to install.

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