Convert MP4 to WEBM
Free, fast and secure — convert MP4 to WEBM right in your browser.
MP4
WEBM
Convert MP4 to WEBM for wider compatibility
Converting MP4 to WEBM gives you a more widely supported file that opens cleanly across more devices, apps and platforms — handy when MP4 will not play nicely everywhere.
How to convert MP4 to WEBM
- 1 Drop your MP4 file into the converter above.
- 2 It is converted to WEBM automatically — no settings to fiddle with.
- 3 Download your new WEBM file instantly.
MP4 vs WEBM
| Feature | MP4 | WEBM |
|---|---|---|
| Compression | Lossy | Lossy |
| Transparency | No | Yes |
| Animation | Yes | Yes |
| MIME type | video/mp4 | video/webm |
| Best for | Sharing, streaming and uploading video anywhere with maximum compatibility. | Embedding fast-loading video on websites and web apps. |
About the formats
MP4
MP4 video
MP4 (H.264) is the universal video container. It balances quality and file size beautifully and plays on virtually every device, browser and platform.
Strengths
- Plays almost everywhere
- Great quality-to-size ratio
- Ideal for streaming and social media
Limitations
- Lossy compression
- Less flexible than MKV for multiple tracks
- Older codecs can look dated
Best for: Sharing, streaming and uploading video anywhere with maximum compatibility.
WEBM
WebM video
WebM is an open, royalty-free format built for the web. It streams efficiently in modern browsers and supports transparency, making it a favourite for HTML5 video.
Strengths
- Optimised for web streaming
- Open and royalty-free
- Supports alpha transparency
Limitations
- Limited support outside browsers
- Not ideal for editing
- Less common on mobile apps
Best for: Embedding fast-loading video on websites and web apps.
Frequently asked questions
Upload your MP4 file above and it is converted to WEBM automatically. When it is ready, download your new WebM video — the whole thing takes just a few seconds in your browser.
Converting MP4 to WEBM gives you a more widely supported file that opens cleanly across more devices, apps and platforms — handy when MP4 will not play nicely everywhere.
Converting between compressed formats can introduce minor changes, but our converter keeps your WEBM looking as close to the original as possible.
Yes. The converter is free to use, with no watermark and no sign-up required.
Your files are processed securely and are never shared with anyone.