WebM video format
- OTHERMultimedia format designed to provide a royalty-free, high-quality open video compression format for use with HTML5 video. WebM supports the video codec VP8 and VP9.
IE
- 5.5 - 8: Not supported
- 9 - 10: Not supported (but has polyfill available)
- 11: Not supported (but has polyfill available)
Edge
- 12 - 13: Not supported (but has polyfill available)
- 14 - 18: Partial support
- 79 - 86: Supported
- 87: Supported
Firefox
- 2 - 3.6: Not supported
- 4 - 27: Partial support
- 28 - 83: Supported
- 84: Supported
- 85 - 86: Supported
Chrome
- 4 - 5: Not supported
- 6 - 24: Partial support
- 25 - 86: Supported
- 87: Supported
- 88 - 90: Supported
Safari
- 3.1: Not supported
- 3.2 - 5.1: Not supported (but has polyfill available)
- 6 - 12: Not supported (but has polyfill available)
- 12.1 - 13.1: Partial support
- 14: Partial support
- TP: Partial support
Opera
- 9 - 10.5: Not supported
- 10.6 - 15: Partial support
- 16 - 71: Supported
- 72: Supported
iOS Safari
- 3.2 - 12.1: Not supported
- 12.2 - 13.7: Partial support
- 14: Partial support
Opera Mini
- all: Not supported
Android Browser
- 2.1 - 2.2: Not supported
- 2.3 - 4.4.4: Partial support
- 81: Supported
Opera Mobile
- 10 - 12.1: Not supported
- 59: Partial support
Chrome for Android
- 87: Supported
Firefox for Android
- 83: Supported
UC Browser for Android
- 12.12: Supported
Samsung Internet
- 4: Partial support
- 5 - 12.0: Supported
- 13.0: Supported
QQ Browser
- 10.4: Supported
Baidu Browser
- 7.12: Supported
KaiOS Browser
- 2.5: Supported
- Resources:
- Wikipedia article
- Official website