MP4 to WebM Converter: Free, Fast and No Upload
Drop in a MP4 file and get a WebM back. Convert MP4 to WebM when you need a small, web friendly video for a website, a game or an app that prefers WebM. Everything runs on your own device, so your video is never uploaded.
MP4 plays almost everywhere. WebM suits websites. MOV suits Apple devices.
How to use the MP4 to WebM
- Drop your MP4 file onto the converter.
- Check that WebM is selected as the output format.
- Press Convert to WebM, preview the result and download it.
What is MP4?
MP4 is the most widely supported video format. It plays on phones, computers, TVs, browsers and every social platform. It plays on practically everywhere. It is a lossy format, so a re-encode always trades a little quality for size.
What is WebM?
WebM is an open format made for the web. It is small and streams well in browsers. It plays on modern browsers and many websites. Many editors, phones and TVs do not play WebM natively.
Frequently asked questions
How do I convert MP4 to WebM for free?
Open the converter, drop in your MP4 file, press Convert to WebM and download. It is free with no watermark and no sign up.
Is WebM smaller than MP4?
It can be at similar quality, but results vary. WebM is best for web pages and apps rather than for sharing on phones.
Is my MP4 file uploaded anywhere?
No. The conversion runs in your browser on your own device, so the file never leaves it.
Does converting reduce quality?
The video is re-encoded at high quality, so for normal viewing the difference is not noticeable. Converting never improves quality beyond the original.