Video tool
WEBM to MP4
WEBM plays fine in browsers and almost nowhere else. Video editors, phone galleries and most upload forms want MP4.
- 100% free
- No signup
- Instant results
Drop your WEBM file here
or click to browse from your device
Supports WEBM · Max 200 MB
You can also paste a copied image with Ctrl+V / ⌘V
- Secure & privateYour files are never shared
- Lightning fastMost images in under a second
- High qualitymozjpeg and libvips under the hood
- Works everywhereAny device, any browser
Frequently asked questions
Browse video toolsWhy does my editor refuse WEBM?
WEBM usually carries VP8 or VP9 video, which many editors never added support for. MP4 with H.264 is the format the entire editing world standardised on.
Will the file get bigger?
Often yes. VP9 compresses somewhat better than H.264, so the same footage in MP4 tends to be larger. That is the price of the compatibility.
Do you keep my files?
No. Uploads are deleted within 2 hours and finished downloads within 24 hours, whichever comes first. We never watch, inspect or share them.
Supported formats and limits
Accepts video/webm. Produces video/mp4. Files up to 200 MB, up to 10 minutes long.
Your files stay private
Uploads are stored under a random name with no connection to the file you sent, and they are never served from a public directory. Input files are deleted within two hours and finished downloads within 24 hours. Nobody looks at them, and nothing is shared with anyone.