Convert MP4 WebM
Free, instant MP4 to WebM conversion. Runs entirely in your browser — your file never leaves your device.
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How MP4 to WebM conversion works
Runs entirely in your browser, no upload
How MP4 to WebM conversion works
Runs entirely in your browser, no upload
- Drop your MP4 file above, or click the upload area to browse for one. Up to 20 files at once.
- Dropvert decodes the MP4 and re-encodes it as WebM entirely inside your browser using WebAssembly. Nothing is uploaded — your file never leaves your device.
- Download the converted WebM file, or use the share button to send it to anyone with a Pro link.
About MP4 and WebM
Format details and typical use cases
About MP4 and WebM
Format details and typical use cases
MP4
MP4 is the most widely used video container format. Video formats are used for movies, social clips, screen recordings, tutorials, and streaming or broadcast distribution.
WebM
WebM is an open video format optimized for the web.