MP4 to WebM
Convert MP4 videos to WebM in your browser. Your video never leaves your device, and there's no upload to wait for.
How to use MP4 to WebM
- 1Select your MP4 video
Click the button or drag a video onto the page.
- 2Check the settings
WebM is already selected. Choose a quality if you want a smaller file.
- 3Convert and download
Click Convert and download your WebM file.
Common questions
Why convert MP4 to WebM?
WebM is an open format made for websites, and often gives smaller files for the same quality.
Is my video uploaded anywhere?
No. Converting happens inside your browser using your device's own video encoder. Your video is never sent to a server.
How long does it take?
Usually less than the video's length on a modern computer. When the video can be copied without re-encoding, it takes only seconds.
Is MP4 to WebM free?
Yes, completely free, with no sign-up and no watermark.