Comparison of layout engines (XHTML 1.1)

The following tables compare XHTML 1.1 compatibility and support for a number of layout engines.

XHTML 1.1 which is mainly a modularization of XHTML 1.0, is composed of 20 element modules (7 of which are submodules), including the additional Ruby Annotation Module, and two attribute modules (Server-side Image Map Module and Intrinsic Events Module).

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	Release version	Preview version	Used by
Amaya	11.4.7^[1]	N/A	No longer developed; Amaya
Blink	537.36	source code^{[note 1]}	Chromium/Chrome (28+), Opera (15+), Yandex, Liebao and Samsung Browser^{[citation needed]}.
EdgeHTML	13.10586 ^[2]	N/A	Microsoft Edge, Universal Windows Platform (UWP) JavaScript apps
Gecko	43.0.4 (January 6, 2016; 8 years ago (2016-01-06)^[3]) [±] ESR 38.5.2 (December 22, 2015; 8 years ago (2015-12-22)^[4]) [±]	Beta 44.0 Beta 8 (January 12, 2016; 8 years ago (2016-01-12)^[5]^[6]) [±] Developer Edition 45.0a2 (December 18, 2015; 8 years ago (2015-12-18)^[7]) [±] daily release Nightly 46.0a1 (December 14, 2015; 8 years ago (2015-12-14)^[8]) [±] daily release	All Mozilla software, including Firefox; SeaMonkey and Galeon; Camino; K-Meleon; Flock (up to 2.x); Debian IceWeasel; GNU IceCat (formerly GNU IceWeasel); Cyberfox; Icedove, Iceape and Iceowl; Firefox for mobile ("Fennec"). Also used by the Maple platform in 2010 and 2011 Samsung "SmartTV" devices which are based on the build used in Firefox 3.0.^{[citation needed]} Nokia Asha platform is also using Gecko for web apps rendering.
KHTML	4.12.3^[9]	N/A	Konqueror^{[note 2]}
Presto	2.12.388	N/A	No longer developed; Opera and Opera Mobile use Blink now; Nintendo DS & DSi Browser; Internet Channel
Tasman	(IE 5.2.3 for Mac)	N/A	No longer developed (aborted in 2003); Internet Explorer 5+ for Mac OS X
Trident	7.0 (IE 11)	N/A	Internet Explorer and other Internet Explorer shells like Maxthon (Microsoft Windows operating systems only), Windows Phone 8
WebKit	534.20	nightly build^{[note 3]}	Tizen (both OS and browser), Safari (both desktop and mobile), Google Chrome (before 28), Maxthon 3, Shiira, iCab 4, OmniWeb 5.5+, Web, Adobe AIR, Midori, Adobe Dreamweaver CS4 and CS5, Android browser, Palm webOS browser, Symbian S60 browser, OWB, Steam, Rekonq, Arora, Flock (version 3+), RockMelt, Dolphin Browser, Sleipnir, Konqueror^{[note 2]}. Used by the LG Smart TV platform to enable web content on TVs.

↑ Lua error in package.lua at line 80: module 'strict' not found.
↑ ^2.0 ^2.1 In Konqueror, the user can switch the used layout engine.
↑ Lua error in package.lua at line 80: module 'strict' not found.

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/element when valid values are used.
No	Indicates that the property/element is completely ignored.
Partial	Indicates that the property/element is understood, but that not all values are supported. Supported values are implemented correctly.
Incorrect	Indicates that the property/element is understood, but that it is not implemented correctly in all cases.
Experimental	Indicates that the property/element is understood, but supported under an alternate name. May be incomplete or buggy.
Dropped	Indicates that the property/element is no longer supported.
Nightly build	Indicates that the property/element is supported to some extent in an experimental/nightly build. Future support is expected.
Depends	Indicates that the property/element is supported only on certain platforms, or if certain settings are configured.

Elements

Core Modules

Structure Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`body`	<3.1^{[IE 1.0]} ^[10]	Yes	Yes	Yes	Yes	Yes	Yes
`head`	<3.1^{[IE 1.0]} ^[10]
`html`	<3.1^{[IE 1.0]} ^[11]
`title`	<3.1^{[IE 1.0]} ^[12]

Text Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`abbr`	Yes^{[citation needed]}	Yes	Yes	Yes	Yes	Yes	Yes
`acronym`	<3.1^{[IE 4.0]} ^[13]	Yes	Yes	Yes	Yes	Yes	Yes
`address`	<3.1^{[IE 1.0]} ^[13]	Yes	Yes	Yes	Yes	Yes	Yes
`blockquote`	<3.1^{[IE 1.0]} ^[13]	Yes	Yes	Yes	Yes	Yes	Yes
`br`	<3.1^{[IE 1.0]} ^[14]	Yes	Yes	Yes	Yes	Yes	Yes
`cite`	<3.1^{[IE 1.0]} ^[13]	Yes	Yes	Yes	Yes	Yes	Yes
`code`		Yes	Yes	Yes	Yes	Yes	Yes
`dfn`		Yes	Yes	Yes	Yes	Yes	Yes
`div`	<3.1^{[IE 3.0]} ^[15]	Yes	Yes	Yes	Yes	Yes	Yes
`em`	<3.1^{[IE 1.0]} ^[13]	Yes	Yes	Yes	Yes	Yes	Yes
`h1`		Yes	Yes	Yes	Yes	Yes	Yes
`h2`		Yes	Yes	Yes	Yes	Yes	Yes
`h3`		Yes	Yes	Yes	Yes	Yes	Yes
`h4`		Yes	Yes	Yes	Yes	Yes	Yes
`h5`		Yes	Yes	Yes	Yes	Yes	Yes
`h6`		Yes	Yes	Yes	Yes	Yes	Yes
`kbd`		Yes	Yes	Yes	Yes	Yes	Yes
`p`	<3.1^{[IE 1.0]} ^[14]	Yes	Yes	Yes	Yes	Yes	Yes
`pre`	<3.1^{[IE 1.0]} ^[13]	Yes	Yes	Yes	Yes	Yes	Yes
`q`	<3.1^{[IE 4.0]} ^[13]	Yes	Yes	Yes	Yes	Yes	Yes
`samp`	<3.1^{[IE 1.0]} ^[13]	Yes	Yes	Yes	Yes	Yes	Yes
`span`	<3.1^{[IE 3.0]} ^[15]	Yes	Yes	Yes	Yes	Yes	Yes
`strong`	<3.1^{[IE 1.0]} ^[13]	Yes	Yes	Yes	Yes	Yes	Yes
`var`	<3.1^{[IE 1.0]} ^[13]	Yes	Yes	Yes	Yes	Yes	Yes

Hypertext Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`a`	<3.1^{[IE 1.0]} ^[14]	Yes	Yes	Yes	Yes	Yes	Yes

List Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`dl`	<3.1^{[IE 1]} ^[16]	Yes	Yes	Yes	Yes	Yes	Yes
`dt`
`dd`
`ol`
`ul`
`li`

Text Extension Modules

Presentation Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`b`	<3.1^{[IE 1]} ^[15]	Yes	Yes	Yes	Yes	Yes	Yes
`big`	<3.1^{[IE 3]} ^[15]
`hr`	<3.1^{[IE 1]} ^[17]
`i`	<3.1^{[IE 1]} ^[15]
`small`	<3.1^{[IE 3]} ^[15]
`sub`
`sup`
`tt`	Yes

Edit Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`del`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`ins`	Yes	Yes	Yes	Yes	Yes	Yes	Yes

Bi-directional Text Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`bdo`	<3.1^{[IE 5.0]} ^[15]	?	Yes	Yes	Partial	Yes	?

Forms Modules

Forms Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`form`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`input`
`select`
`option`
`textarea`
`button`
`fieldset`
`label`
`legend`
`optgroup`

Table Modules

Table Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`caption`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`table`
`td`
`th`
`tr`
`col`		?
`colgroup`		?
`tbody`		Yes
`thead`
`tfoot`							?

Image Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`img`	<3.1^{[IE 1.0]} ^[17]	Yes	Yes	Yes	Yes	Yes	Yes

Client-side Image Map Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`area`	<3.1^{[IE 1.0]} ^[17]	Yes	Yes	Yes	Yes	Yes	Yes
`map`	<3.1^{[IE 1.0]} ^[17]	Yes	Yes	Yes	Yes	Yes	Yes

Object Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`object`	<3.1^{[IE 3.0]} ^[17]	Yes	Yes	Yes	Yes	Yes	Yes
`param`	<3.1^{[IE 3.0]} ^[17]	Yes	Yes	Yes	Yes	Yes	Yes

Metainformation Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`meta`	<3.1^{[IE 2.0]} ^[12]	Yes	Yes	Yes	Yes	Yes	Yes

Scripting Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`script`	<3.1^{[IE 3.0]} ^[11]	Yes	Yes	Yes	Yes	Yes	Yes
`noscript`	<3.1^{[IE 3.0]} ^[11]^{[citation needed]}	Yes	Yes	Yes	Yes	Yes	Yes

Style Sheet Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`style`	<3.1^{[IE 3.0]} ^[11]^{[note 1]}	Yes	Yes	Yes	Yes	Yes	Yes

Link Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`link`	<3.1^{[IE 3.0]} ^[12]	Yes	Yes	Yes	Yes	Yes	Yes

Base Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`base`	<3.1^{[IE 1.0]} ^[12]	Yes	Yes	Yes	Yes	Yes	Yes

Ruby Annotation Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`ruby`	Yes	No	Yes	Yes	No	No	No
`rbc`	No			No
`rtc`	No			No
`rb`	Yes			Yes
`rt`	Yes			Yes
`rp`	No			No

Attributes

Core

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`class`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`id`
`title`

I18N

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`dir`	Yes	Yes	Yes	Yes	Yes	Yes	Yes
`xml:lang`	?	?	?	?	?	?	?

Events

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
Mouse
`onclick`	?	?	?	?	?	?	?
`ondblclick`
`onmousedown`
`onmouseup`
`onmouseover`
`onmousemove`
`onmouseout`
Keyboard
`onkeypress`	?	?	?	?	?	?	?
`onkeydown`
`onkeyup`

Server-side Image Map Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
`ismap`	?	?	?	?	?	?	?

Intrinsic Events Module

	Trident	Tasman	Gecko	WebKit	KHTML	Presto	iCab
Structure Module
`onload`	?	?	?	?	?	?	?
`onunload`	?	?	?	?	?	?	?
Forms Module
`onchange`	?	?	?	?	?	?	?
`onblur`
`onfocus`
`onreset`
`onselect`
`onsubmit`

Notes

↑ All style tags after the first 31 style tags are not applied.
All style rules after the first 4,095 rules are not applied.
On pages that uses the @import rule to continuously import external style sheets that import other style sheets, style sheets that are more than three levels deep are ignored.^[18]

References

↑ Amaya Binary Releases, Most recent download link in stable
↑ Change log between EdgeHTML 12.10240 and 13.10586
↑ Lua error in package.lua at line 80: module 'strict' not found.
↑ Lua error in package.lua at line 80: module 'strict' not found.
↑ Lua error in package.lua at line 80: module 'strict' not found.
↑ Lua error in package.lua at line 80: module 'strict' not found.
↑ Lua error in package.lua at line 80: module 'strict' not found.
↑ Lua error in package.lua at line 80: module 'strict' not found.
↑ Download for kdelibs, Most recent download link in stable
↑ Lua error in package.lua at line 80: module 'strict' not found.
↑ ^11.0 ^11.1 ^11.2 ^11.3 Lua error in package.lua at line 80: module 'strict' not found.
↑ ^12.0 ^12.1 ^12.2 ^12.3 Lua error in package.lua at line 80: module 'strict' not found.
↑ ^13.0 ^13.1 ^13.2 ^13.3 ^13.4 ^13.5 ^13.6 ^13.7 Lua error in package.lua at line 80: module 'strict' not found.
↑ ^14.0 ^14.1 ^14.2 Lua error in package.lua at line 80: module 'strict' not found.
↑ ^15.0 ^15.1 ^15.2 ^15.3 ^15.4 ^15.5 ^15.6 Lua error in package.lua at line 80: module 'strict' not found.
↑ Lua error in package.lua at line 80: module 'strict' not found.
↑ ^17.0 ^17.1 ^17.2 ^17.3 Lua error in package.lua at line 80: module 'strict' not found.
↑ Lua error in package.lua at line 80: module 'strict' not found.

[2] Lua error in package.lua at line 80: module 'strict' not found.

[switch-11] 2.0 ^2.1 In Konqueror, the user can switch the used layout engine.

[12] Lua error in package.lua at line 80: module 'strict' not found.

[22] All style tags after the first 31 style tags are not applied.
All style rules after the first 4,095 rules are not applied.
On pages that uses the @import rule to continuously import external style sheets that import other style sheets, style sheets that are more than three levels deep are ignored.^[18]

[1] Amaya Binary Releases, Most recent download link in stable

[3] Change log between EdgeHTML 12.10240 and 13.10586

[43.0.4-4] Lua error in package.lua at line 80: module 'strict' not found.

[38.5.2-5] Lua error in package.lua at line 80: module 'strict' not found.

[6] Lua error in package.lua at line 80: module 'strict' not found.

[7] Lua error in package.lua at line 80: module 'strict' not found.

[8] Lua error in package.lua at line 80: module 'strict' not found.

[9] Lua error in package.lua at line 80: module 'strict' not found.

[10] Download for kdelibs, Most recent download link in stable

[DocumentStructure-13] Lua error in package.lua at line 80: module 'strict' not found.

[LanguageDeclarations-14] 11.0 ^11.1 ^11.2 ^11.3 Lua error in package.lua at line 80: module 'strict' not found.

[DocumentProperties-15] 12.0 ^12.1 ^12.2 ^12.3 Lua error in package.lua at line 80: module 'strict' not found.

[LogicalTextStyle-16] 13.0 ^13.1 ^13.2 ^13.3 ^13.4 ^13.5 ^13.6 ^13.7 Lua error in package.lua at line 80: module 'strict' not found.

[DocumentLayout-17] 14.0 ^14.1 ^14.2 Lua error in package.lua at line 80: module 'strict' not found.

[PhysicalTextFormatting-18] 15.0 ^15.1 ^15.2 ^15.3 ^15.4 ^15.5 ^15.6 Lua error in package.lua at line 80: module 'strict' not found.

[19] Lua error in package.lua at line 80: module 'strict' not found.

[ImagesAndObjects-20] 17.0 ^17.1 ^17.2 ^17.3 Lua error in package.lua at line 80: module 'strict' not found.

[21] Lua error in package.lua at line 80: module 'strict' not found.

[1]

[note 1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[note 2]

[note 3]

[10]

[11]

[12]

[13]

[14]

[15]

[16]

[17]

[note 1]

[18]

v t e Browser engines
Active (comparison)	Blink Flow Gecko Goanna WebKit
Maintained	EdgeHTML KHTML NetSurf Servo Trident
Discontinued	Mariner Presto Tasman Tkhtml