Comparison of layout engines (HTML 5)

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HTML
HTML Dynamic HTML XHTML Character encodings Font family HTML editor HTML element HTML scripting Layout engine Quirks mode Style sheets Unicode and HTML W3C Web colors Comparison of web browsers layout engines for HTML HTML 5 Non-standard HTML XHTML

The following tables compare support of HTML 5 differences from HTML 4 for a number of layout engines. The specification is still a working draft, not a recommendation, and thus not stable. Unless otherwise specified in footnotes, comparisons are based on the stable versions without any add-ons, extensions or external programs.

1 Explanation of the tables
- 1.1 Engine nomenclature
- 1.2 Values
2 Web Forms 2.0
3 Web Applications 1.0
4 References
5 External links

Explanation of the tables

Engine nomenclature

Rather than the names of web browsers, the names of the underlying engines are used. The browsers that use the various engines are listed below.

Layout Engine	Used By
Trident (also known as MSHTML)	Internet Explorer 4 to Internet Explorer 8
Tasman	Internet Explorer 5 for Mac; MSN for Mac OS X
Gecko	All Mozilla software, including Firefox; Galeon; Flock; also Epiphany
WebKit	Safari; Shiira; iCab 4; Epiphany; Adobe Air; Google Chrome; Midori; OmniWeb; Adobe Dreamweaver CS4;
KHTML	Konqueror
Presto	Opera; Nintendo DS Browser; Internet Channel; future Adobe Systems products
iCab	iCab 1-3
Prince XML	Prince XML
Amaya	Amaya

Values

Values indicate the level of support in the most recent version of the layout engine, or (if a version number is given) in the specified version. Version numbers without any other value indicate the version at which the layout engine first fully supported the feature.

Value	Meaning
Yes	Indicates that the layout engine fully supports this property when valid values are used.
No	Indicates that this property is completely ignored.
Partial	Indicates that the property is understood, but that not all values are supported. Supported values are implemented correctly.
Incorrect	Indicates that the property is understood, but that it is not implemented correctly in all cases.
Experimental	Indicates that the property is provided in experimental form under an alternative name, generally with only partial functionality.

Web Forms 2.0

	Trident	Gecko	WebKit	Presto
Attributes
`min`	No	No	No	9.0
`max`	No	No	No	9.0
`step`	No	No	No	9.0
`pattern`	No	No	No	9.0
`required`	No	No	No	9.0
`form`	No	No	No	9.0
`autocomplete`	Yes	Yes	Yes	9.0
`autofocus`	No	No	No	9.0
`inputmode`	No	No	No	9.0
`list`	No	No	No	9.0
`template`	No	No	No	9.0
`repeat`	No	No	No	9.0
`repeat-min`	No	No	No	9.0
`repeat-max`	No	No	No	9.0
Elements
`datalist`	No	No	No	9.0
`output`	No	No	No	9.0
Input types
`datetime`	No	No	No	9.0
`datetime-local`	No	No	No	9.0
`date`	No	No	No	9.0
`month`	No	No	No	9.0
`week`	No	No	No	9.0
`time`	No	No	No	9.0
`number`	No	No	No	9.0
`range`	No	No	Yes	9.0
`email`	No	No	No	9.0
`url`	No	No	No	9.0
`add`	No	No	No	9.0
`remove`	No	No	No	9.0
`move-up`	No	No	No	9.0
`move-down`	No	No	No	9.0

Web Forms 2.0 features can be emulated with third-party libraries:

With input-type-date, the date type for input element can be emulated in Firefox, IE6/7 and Safari.
With this Web Forms 2.0 Cross-Browser Implementation, the repetition model, extensions to form control elements, form validation, fetching data from external resources and more can all be emulated in Firefox, IE6/7 and Safari 2.0.4.
Validation, date and time types, range, repetition, calculated fields, datalist and autofocus can be emulated in MSIE with WF2.

Web Applications 1.0

Elements

	Trident	Gecko	WebKit	Presto
`canvas`	No	Partial	Partial	Partial[1]
`audio`	No	1.9.1^[1]	3.1	Partial
`video`	No	1.9.1^[1]	3.1	Nightly builds
`section`	No	No	No	No
`article`	No	No	No	No
`aside`	No	No	No	No
`header`	No	No	No	No
`footer`	No	No	No	No
`nav`	No	No	No	No
`dialog`	No	No	No	No
`figure`	No	No	No	No
`embed`	3.0	1.7	1.0	5.12
`mark`	No	No	No	No
`meter`	No	No	No	No
`time`	No	No	No	No
`command`	No	No	No	No
`datagrid`	No	No	No	No
`details`	No	No	No	No
`event-source`	No	No	No	9.0
`progress`	No	No	No	No

Attributes

Element Specific

		Trident	Gecko	WebKit	Presto
`manifest`	html	No	1.9	No	No
`ping`	a	No	No^†	No	No
`ping`	area	No	No^†	No	No
`reversed`	ol	No	No	No	No
`sandbox`	iframe	No	No	No	No
`sizes`	link	No	No	No	No

Global

	Trident	Gecko	WebKit	Presto
`contenteditable`	Yes^†	1.9	Yes	9.0
`contextmenu`	No	No	No	No
`data-*`	No	No	No	No
`draggable`	No	1.9.1	No	No
`irrelevant`	No	No	No	No
`ref`	No	No	No	No
`registrationmark`	No	No	No	No
`template`	No	No	No	No

APIs

	Trident	Gecko	WebKit	Presto
`getElementsByClassName`	No	1.9	3.1	9.5
`Client-side session and persistent storage`	8.0	1.8	3.1	No
`registerProtocolHandler`	No	1.9^†	No	No
`registerContentHandler`	No	1.8^†	No	No
`Cross-document messaging`	8.0	1.9	Nightly builds	9.0
`Server-sent DOM events`	No	No	No	9.0
`Drag-and-drop`	Partial	1.9.1	Partial	No

Trident General notes

contentEditable - Microsoft is regarded as the originator of this technology.^{[citation needed]}

Gecko General notes

registerProtocolHandler - Limited to the feed protocol in 1.8; fully supported in 1.9.^[2]

registerContentHandler - Limited to feed MIME types in 1.8 and 1.9.^[3]

ping - Experimental implementation has been turned off by default in 1.9 due to specification changes late in the development cycle.^[4]

References

"Opera Developer Community". Improve your forms using HTML5. Retrieved on February 10, 2007.
"Opera Developer Community". Web Technologies for Opera Web Applications. Retrieved on February 10, 2007.
"HTML5 Media Support (in WebKit/Safari)". Retrieved on November 13, 2007.

^ ^a ^b "The Video and Audio element patch has landed". Chris Double (2008-07-09). Retrieved on 2008-07-12.
^ "DOM:window.navigator.registerProtocolHandler". Mozilla Developer Center. Retrieved on 2008-02-04.
^ "DOM:window.navigator.registerContentHandler". Mozilla Developer Center. Retrieved on 2008-02-04.
^ "Bug 415168 - Disable <a ping> for Firefox 3". Mozilla. Retrieved on 2008-02-04.

External links

Implementations in Web browsers - WHATWG wiki page tracking features implemented in various Web browsers.
Canvas tests - Test cases and results for <canvas> implementations.
Web Forms 2 test suite for the repetition model
Web Forms 2 test suite for form functionality

Layout engines

List of layout engines	Amaya · Boxely · Gecko · GtkHTML · Gzilla · HTMLayout · KHTML · Mariner · Presto · Prince · Tasman · Tkhtml · Trident · WebKit

Comparison of layout engines	HTML · XML · XHTML · Graphics · CSS · DOM · HTML 5 · ECMAScript · SVG · Non-standard HTML