mp4
→webm
Convert MP4 to WebM — Free, Fast & Private
Convert MP4 video to open WebM format for web embedding. WebM is royalty-free and optimized for HTML5 video. All processing in your browser.
Web optimizedHTML5 compatibleNo file limitBatch convert
How to Convert MP4 to WebM
- 1
Select your MP4 video by dragging or clicking to browse.
- 2
Click Convert — re-encoding runs in your browser.
- 3
Download your WebM for HTML5 web embedding.
MP4 vs WebM — Format Comparison
| Feature | MP4 | WebM |
|---|---|---|
| Licensing | H.264 patents | Royalty-free |
| Web optimization | Good | Excellent |
| File size | Similar | Often smaller |
| HTML5 | Supported | Native |
| Best for | General use | Web embedding |
When to Convert MP4 to WebM
- •Web video embedding
- •Reducing bandwidth
- •Open-source projects
- •HTML5 video
Frequently Asked Questions
Why convert MP4 to WebM?
WebM is royalty-free and optimized for web. Many sites use WebM for HTML5 video to reduce bandwidth.
Does WebM support all video codecs?
WebM typically uses VP8/VP9. Conversion re-encodes from H.264/HEVC to VP9 for web compatibility.
Which browsers support WebM?
Chrome, Firefox, Edge, and Opera fully support WebM. Safari has added support. Great for web use.
Is conversion fast?
Depends on file size and device. Processing happens in your browser — no server wait.