XHTML served as application/xhtml+xml
- LSA strict form of HTML, and allows embedding of other XML languages
IE
- 5.5 - 8: Not supported
- 9 - 10: Supported
- 11: Supported
Edge
- 12 - 87: Supported
- 88: Supported
Firefox
- 2 - 84: Supported
- 85: Supported
- 86 - 87: Supported
Chrome
- 4 - 87: Supported
- 88: Supported
- 89 - 91: Supported
Safari
- 3.1 - 13.1: Supported
- 14: Supported
- TP: Supported
Opera
- 9 - 72: Supported
- 73: Supported
iOS Safari
- 3.2 - 13.7: Supported
- 14: Supported
Opera Mini
- all: Supported
Android Browser
- 2.1 - 4.4.4: Supported
- 81: Supported
Opera Mobile
- 10 - 12.1: Supported
- 59: Supported
Chrome for Android
- 88: Supported
Firefox for Android
- 85: Supported
UC Browser for Android
- 12.12: Supported
Samsung Internet
- 4 - 12.0: Supported
- 13.0: Supported
QQ Browser
- 10.4: Supported
Baidu Browser
- 7.12: Not supported
KaiOS Browser
- 2.5: Supported
The XHTML syntax is very close to HTML, and thus is almost always (incorrectly) served as text/html on the web.
- Sub-features:
- XHTML+SMIL animation