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iOS 5 HTML5 Support

Safari works on your iPad, iPhone, iPod touch, Mac, and PC. In HTML5 compatibility Safari shipped with iOS 5 wins all browsers for mobile and portable devices. A big improvement in iOS 5 is the HTML5 compatibility. iOS 5 HTML 5 compatibility revealed the major jump towards open source web standards from Apple.

Safari was the first browser to support HTML5 audio and video tags. See Safari HTML5 support and compatibility. Safari was also the first browser to support CSS3 Animations. HTML5, CSS5 and Javascript, these are the web standard nowadays. See

Bellow chart shows the details of iOS 5 HTML5 Support:

iOS 5 HTML5 Support List

Parsing rules
<!DOCTYPE html> triggers standards mode Yes
HTML5 tokenizer Yes
HTML5 tree building Yes
SVG in text/html Yes
MathML in text/html Yes
video element Yes
Subtitle support No
Poster image support Yes
MPEG-4 support Yes
H.264 support Yes
Ogg Theora support No
WebM support No
audio element Yes
PCM audio support Yes
AAC support Yes
MP3 support Yes
Ogg Vorbis support No
WebM support No
canvas element Yes
2D context Yes
Text Yes
Embedding custom non-visible data Yes
New or modified elements
Global attributes or methods
hidden attribute Yes
Field types
User interaction
Drag and drop
HTML editing
spellcheck attribute Yes
History and navigation
Session history Yes
Microdata 0
Microdata No
Web applications
Application Cache Yes
Custom scheme handlers No
Custom content handlers No
Custom search providers Unknown ?
Sandboxed iframe Yes
Seamless iframe No
iframe with inline contents No
Scoped style element No
Asyncronous script execution Yes
Runtime script error reporting Yes
Base64 encoding and decoding Yes
Location and Orientation
Geolocation Yes
Device Orientation Yes
3D context No
Cross-document messaging Yes
Server-Sent Events Yes
WebSocket Yes
FileReader API No
FileSystem API No
Session Storage Yes
Local Storage Yes
IndexedDB No
Web SQL Database Yes
Web Workers Yes
Shared Workers Yes
Local multimedia
Access the webcam No
Web Notifications No
Page Visibility No
Text selection Yes
Scroll into view Yes
Web Audio API No
Video and Animation
Full screen support No
window.requestAnimationFrame No

The test of iOS 5 Safari browser support for HTML5 shows that iOS 5 provides the best support to HTML5. Furthermore iOS 5 performed very well with regards to HTML5 compatibility in comparison to desktop browsers. iOS 5’s Safari is behind Mozilla’s Firefox 7. 1 and just ahead of Apple’s desktop Safari 5. 1 while Google’s Chrome 14 remains the most HTML5-compatible browser as of now.

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One Response to “iOS 5 HTML5 Support”

  • […] The latest version of Apple’s Safari web browser supports web standards including HTML5, CSS3, and JavaScript. These web standards are open, reliable, highly secure, and efficient. They are not the add-ons to the web, they are the web itself. Safari 5 provides excellent HTML5 support. No html5 safari extension will need to be installed as long as you have the latest Sarafi web browser. It doesn’t matter if you are on iOS, Mac OS X or Windows, with the latest Safari 5 it easy to deliver online audio and video. See also iOS 5 HTML5 Support. […]