FileTranslator › MP4 to WebM
Convert MP4 to WebM
WebM is the open, royalty-free video format of the web platform — preferred for HTML5 embedding and required by some open-source projects and platforms.
Drop MP4 files here
or
Output is pre-set to WebM — you can change it per file after adding.
About MP4 to WebM conversion
Your MP4 is re-encoded to VP8 WebM with Vorbis audio, entirely on your device. Encoding to WebM is slow by nature, so it is best suited to shorter clips.
Good to know: VP8 encoding in the browser is slow — significantly slower than real time. Short clips are fine; feature-length files are better done in a desktop app.
How to convert MP4 to WebM
- Drop your MP4 file onto the box above, or click Choose files.
- The output format is already set to WebM — adjust it per file if you need something else.
- Click Convert, then download your WebM file.
Free, no account, no watermarks — and because the conversion runs in your browser, your files are never uploaded to a server.