seamless attribute for iframes
- UNOFFThe seamless attribute makes an iframe's contents actually part of a page, and adopts the styles from its hosting page. The attribute has been removed from both the WHATWG and the W3C HTML5 specifications.
Chrome
- ❌ 4 - 19: Not supported
- ❌ 20 - 26: Disabled by default
- ❌ 27 - 135: Not supported
- ❌ 136: Not supported
- ❌ 137 - 139: Not supported
Edge
- ❌ 12 - 135: Not supported
- ❌ 136: Not supported
Safari
- ❌ 3.1 - 6.1: Not supported
- ❌ 7 - 7.1: Not supported
- ❌ 8 - 18.4: Not supported
- ❌ 18.5: Not supported
- ❌ TP: Not supported
Firefox
- ❌ 2 - 137: Not supported
- ❌ 138: Not supported
- ❌ 139 - 141: Not supported
Opera
- ❌ 9 - 116: Not supported
- ❌ 117: Not supported
IE
- ❌ 5.5 - 10: Not supported
- ❌ 11: Not supported
Chrome for Android
- ❌ 136: Not supported
Safari on iOS
- ❌ 3.2 - 6.1: Not supported
- ❌ 7: Not supported
- ❌ 8 - 18.4: Not supported
- ❌ 18.5: Not supported
Samsung Internet
- ❌ 4 - 26: Not supported
- ❌ 27: Not supported
Opera Mini
- ❌ all: Not supported
Opera Mobile
- ❌ 10 - 12.1: Not supported
- ❌ 80: Not supported
UC Browser for Android
- ❌ 15.5: Not supported
Android Browser
- ❌ 2.1 - 4.4.4: Not supported
- ❌ 136: Not supported
Firefox for Android
- ❌ 137: Not supported
QQ Browser
- ❌ 14.9: Not supported
Baidu Browser
- ❌ 13.52: Not supported
KaiOS Browser
- ❌ 2.5: Not supported
- ❌ 3: Not supported
Chrome 20-26 had partial support behind a flag, though this was later removed.