WebM is an open video format developed by Google, designed for use on the web. It uses VP8 or VP9 video codecs and is supported by all modern browsers.
Yes. WebM files are smaller than MP4 at similar quality and are natively supported in Chrome, Firefox, and Edge without plugins.
Yes. You can use the HTML5 video element with a WebM source and it will play directly in the browser.
WebM uses VP8 or VP9 for video and Vorbis or Opus for audio. All are open-source and royalty-free.
WebM with VP9 is typically 30 to 50 percent smaller than H.264 MP4 at the same visual quality.
Yes. WebM is supported natively in all modern browsers and can be used directly in HTML5 video elements in any web framework.
Yes. WebM with VP8 or VP9 supports alpha channel transparency, which is useful for video overlays.