Convert MP4 to WEBM online
Convert MP4 files to WEBM online
Convert MP4 files to WEBM when you need a format that works well on the web. This MP4 to WEBM converter is useful for websites, lighter video files, and browser-friendly playback. Just upload your file and get the new format in a few clicks.
How it works
Upload the MP4
Choose the video you want in WebM format.
Convert to WebM
The video is encoded for web-friendly playback.
Download and test
Check playback in target browsers and compare file size.
Frequently asked questions
About MP4 to WebM
MP4 to WebM converts a standard video into a web-focused format often used for HTML5 video, open web workflows, and lightweight embeds. WebM can work well for background videos, product clips, and browser-first delivery. The right format depends on your audience. MP4 has broader compatibility, while WebM can be efficient in modern browsers. Many production websites provide both formats and let the browser choose. After conversion, test the WebM in the browsers you care about and compare file size against the MP4.
Updated June 2026: Added guidance for converting MP4 to WebM for web embedding, open video workflows, browser playback, and file-size testing.
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