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Video Compressor

Make video files smaller for email, WhatsApp or upload limits — by quality level or target size, in your browser.

🔒 Your video is processed locally in your browser. Your file is never uploaded.

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How to use the Video Compressor

  1. Choose a video.
  2. Pick a compression level, or type a target size in MB.
  3. Click "Compress" and download the smaller MP4.

Common use cases

  • Get a clip under the 25 MB email or Discord limit
  • Send phone videos over WhatsApp or Telegram in better quality
  • Save storage space before archiving

Example

A 180 MB, 2-minute 1080p phone video with "Target size 25 MB" becomes a 720p MP4 of about 24 MB.

What the Video Compressor does

It re-encodes your video as an efficient H.264 MP4 and, if useful, lowers the resolution, which is the biggest single saving. Balanced usually cuts phone videos by 60–80% with no visible difference on a phone screen. Target file size calculates the bitrate needed to land just under a limit such as 25 MB for email, and picks a sensible resolution automatically.

Very short limits for long videos mean lower quality. As a rule of thumb, 25 MB holds about 3 minutes of 720p or about 6 minutes of 480p. If you only need part of the video, cut it first with the Video Trimmer.

Frequently Asked Questions (FAQ)

Q: Is my file uploaded to a server?
A: No. The tool runs FFmpeg compiled to WebAssembly inside your browser tab. Your file is read directly from your device and the result is created locally. Only the video engine itself (open-source ffmpeg.wasm, about 10 MB compressed) is downloaded the first time, from a public CDN; after that it is cached.
Q: How big can the file be?
A: Up to about 500 MB works well on a computer and about 150 MB on a phone. Larger files may still work but can be slow or run out of browser memory. Trimming the clip or lowering the resolution first helps.
Q: Why is it slower than a desktop app?
A: The browser version of FFmpeg runs on a single CPU core and without hardware acceleration. A 1-minute 1080p re-encode typically takes 1–3 minutes. When possible the tools copy the streams without re-encoding, which takes only seconds.
Q: The result is bigger than my original — why?
A: Your video was already efficiently compressed. Choose "Strong", a lower resolution, or a target size smaller than the original.