MP4 vs WEBM
A quick, plain-English comparison of the MP4 and WEBM file formats — and how to convert between them, free and in your browser.
| MP4 | WEBM | |
|---|---|---|
| Category | video | video |
| Extension | .mp4 | .webm |
| MIME type | video/mp4 | video/webm |
| Converts to | 31 formats | 31 formats |
| Direction here | read & write | read & write |
Convert between MP4 and WEBM
MP4 vs WEBM: frequently asked questions
What's the difference between MP4 and WEBM?
MPEG-4 video container; the web/mobile default. Open web video container (VP8/VP9/AV1).
Should I use MP4 or WEBM?
Both are video formats — the right one depends on compatibility, quality and file size for your use. Whichever you have, you can convert it to the other below in seconds.
How do I convert MP4 to WEBM?
Open the MP4-to-WEBM converter, drop your MP4 file in, and download the WEBM. We auto-detect the real format from the file's bytes, so a mislabeled file still works.