Convert MP4 to WebM Online
MP4 plays everywhere, but sometimes a site or an app wants WebM. Upload your MP4 videos, click "Convert" and download them as WebM. WebM (VP9 + Opus) is an open format for the web: browsers play it natively, and many sites and HTML5 players prefer it.
The video is encoded with VP9 and the sound with Opus, with the original resolution. Files are deleted from our server automatically after 48 hours.
Why Use This MP4 to WebM Converter?
- An open WebM (VP9 + Opus) for the web
- Several files at once, up to 1 GB each
- Encrypted connection, files deleted after 48 hours
- Free, no registration, no watermark
How to Convert MP4 to WebM
- Select or drag your MP4 videos into the upload area
- Check the list of files; you can add more or remove some
- Click "Convert" and download the WebM files
Frequently Asked Questions
Is this MP4 to WebM converter free?
Yes, it is completely free, with no registration and no watermark.
What is an MP4 file?
MP4 is the most common video format: every phone, computer, TV and website plays it.
Why convert MP4 to WebM?
WebM (VP9 + Opus) is an open format for the web: browsers play it natively, and many sites and HTML5 players prefer it.
Are my files safe?
Files are sent over an encrypted connection and deleted from our server automatically after 48 hours; you can delete them earlier in "Your files".