Compress Video Online
Reduce MP4, MOV, WebM and MKV video size without visible quality loss, using your device's hardware encoder — no upload, no watermark.
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How to use
- Add one or more MP4, M4V, MOV, WEBM, MKV, AVI, OGV and 3GP videos — drag and drop, click to browse, or paste.
- Adjust the options, or keep the recommended defaults.
- Press “Compress” and download each result, or everything at once as a ZIP.
Formats & privacy
Input: MP4, M4V, MOV, WEBM, MKV, AVI, OGV and 3GP
Output: MP4 and WEBM
Files are processed on your device whenever your browser can do the job. A file only reaches our server when it is too large or needs a codec the browser lacks. Read the privacy details.
Frequently asked questions
Is Compress Video Online free?
Yes. Compress Video Online is free to use, with no sign-up, no watermark and no daily limit.
Are my files uploaded?
Usually not. Processing happens on your device in the browser. Only when your browser cannot handle a file (for example, a very large one) is it sent to our server, processed, and deleted automatically within 30 minutes.
Which formats are supported?
Input: MP4, M4V, MOV, WEBM, MKV, AVI, OGV and 3GP. Output: MP4 and WEBM.
Is there a file size limit?
Files up to 800 MB are processed on your device. Larger files are handled by our server when it is available.
Can I process several files at once?
Yes. Add as many files as you like; they are processed in parallel and you can download them all as a single ZIP.