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Convert MP4 to WEBM

Convert MP4 files to WEBM without uploading them. No ads, no tracking, no sign-up.

or drop them anywhere on the page, or paste

How to convert MP4 to WEBM

  1. Choose your MP4 files, or drop them anywhere on this page.
  2. Check that WEBM is selected, and adjust the settings if you like.
  3. Select Convert, then save your WEBM files. Nothing is uploaded.

About MP4 and WEBM

MP4 is the most widely supported video format. It plays on phones, browsers, TVs and in every editing app.

WebM is an open video format for the web, using VP8, VP9 or AV1 video. Browsers play it, but many editors and Apple apps don't.

Questions

How do I convert MP4 to WEBM?
Choose your MP4 files or drop them on this page, check that WEBM is selected, then select Convert and save the result. It works the same on a phone or a computer, and the files never leave your device.
Is it safe to convert MP4 to WEBM here?
Yes. The conversion runs in your browser, so your MP4 files aren't uploaded to a server, and nothing is stored or logged.
Can I convert several MP4 files at once?
Yes. Add as many as you like and they convert together; when there are several results you can save them all as one ZIP.

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