MP4 to WebM
Change MP4 to WebM and keep the quality you need. Free for up to 10 files a day, no sign-up.
Your files
Drop your .mp4 files here
or
You can add several files and convert them together.
How to convert MP4 to WebM
WebM is an open format browsers play natively. Converting MP4 to WebM is useful for websites and apps that prefer open formats.
- Drop your MP4 file into the box above, or add it from a link.
- WebM is already selected. Use the settings button next to it to change size, quality or other options.
- Select Convert, then download your WebM file.
To do this from your own code, call the FileForge API with "output_format": "webm".
Good to know
- Video is encoded with VP9, which is efficient but slower to encode than H.264.
- Apple devices and many editors have limited WebM support, so keep the MP4 too.
About the formats
.mp4
MP4 is the most widely supported video format. It plays on practically every phone, browser, TV and editor, usually with H.264 video and AAC audio inside.
.webm
WebM is an open video format designed for the web, usually with VP9 or AV1 video. Browsers play it well, but iPhones, video editors and many TVs don't.
Questions
Is WebM smaller than MP4?
At similar quality VP9 WebM is often somewhat smaller than H.264 MP4.
Are my files kept?
Your files are uploaded over HTTPS to a private link only you have. Originals and results are deleted automatically after 24 hours, or straight away when you remove them.