Comparison of layout engines (non-standard HTML) Telecommunication Systems 482 regular-tuition-program.pts-ptn.net

Comparison of layout engines (non-standard HTML)

HTML and HTML5; HTML editor
Dynamic HTML
XHTML
- XHTML Basic (Mobile)
- XHTML Mobile Profile and C-HTML
HTML element
Character encodings; Unicode
Language code
Document Object Model
Browser Object Model
Style sheets and CSS
Font family and Web colors
HTML scripting and JavaScript
W3C, WHATWG, and validator
Quirks mode
HTML Frames
HTML5 Canvas, WebGL, and WebCL
HTML5 Audio and HTML5 video
Web storage
Web browser (layout) engine
Comparison of
- document markup languages
- web browsers
- layout engine support for
  - HTML;　Non-standard HTML
  - XHTML (1.1)
  - HTML5; HTML5 canvas,
    - HTML5 media　(Audio, Video)

The following tables compare deprecated and proprietary HTML elements and attributes compatibility and support for a number of layout engines. Please see the individual products' articles for further information. This article is not all-inclusive or necessarily up-to-date. Unless otherwise specified in footnotes, comparisons are based on the stable versions without any add-ons, extensions or external programs.

In the early years of the World Wide Web, the standards which today are used in most web browsers and web pages were mostly non-existent. Different browsers and HTML editors were being offered by competing vendors such as Netscape, Microsoft and WebTV, all of whom had their own ideas for how web sites should be constructed. These varying features resulted in web developers coding for specific web browsers, using elements which could often be recognized by only one browser.

The WebTV and IBM WebExplorer inventions have never seen adoption by mainstream browsers.

1 Explanation of the tables
- 1.1 Engine nomenclature
- 1.2 Values
2 Deprecated HTML elements
3 Deprecated HTML attributes
4 Proprietary HTML elements
5 Proprietary HTML attributes
6 See also
7 Notes
8 References

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	11.3.1	11.3-pre	Amaya
Gecko	19.0	20.0	All Mozilla software, including Firefox; SeaMonkey and Galeon; Camino; K-Meleon; Flock (up to 2.x); Debian IceWeasel; GNU IceCat (formerly GNU IceWeasel); Icedove, Iceape and Iceowl; 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.
KHTML		N/A	Konqueror^†
Presto	2.10.229	2.10.238	Opera; Opera Mobile, Nintendo DS & DSi Browser; Internet Channel
Tasman	(IE 5.2.3 for Mac)	none (aborted in 2003)	Internet Explorer 5+ for Mac OS X
Trident	6.0 (IE 10)	6.0 (IE 10)	Internet Explorer and other Internet Explorer shells like Maxthon (Microsoft Windows operating systems only), Windows Phone 8
WebKit	534.20	r146740	Tizen (both OS and browser), Safari (both desktop and mobile), Google Chrome, 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^†, rekonq. Used by the LG Smart TV platform to enable web content on TVs.

^† In Konqueror, the user can switch layout engine.

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.

Deprecated HTML elements

Element	Function	Supported first by	Deprecated in HTML version	Alternative solution	Trident	Gecko	WebKit	KHTML	Presto
`applet`	Insert an applet	HotJava	4^[1]	`embed`, `object`	<3.1^{[IE 4.0]}	1.7	Yes	Yes	1.0
`basefont`	Sets font styles	Internet Explorer	4	CSS	<3.1^{[IE 3.0]}	No^[2]	85		Yes
`center`	Centers contents	Netscape^[3]	4	CSS	3.1	Yes	Yes
`dir`	Directory list	?	4	`ul`, `ol`
`font`	Applies font styles	Netscape	4	CSS
`isindex`^[4]	Adds a search field	?	4	`input type="search"`	<3.1^{[IE 5.5]}	1.7	312		Partial
`listing`	Displays preformatted text	IETF	2	`pre`, `samp`, `code`, CSS	3.1	1.7	125	3.3	Yes
`menu`	Menu list	?	4	`ul`, `ol`		Yes	Yes	Yes
`plaintext`	Designates that all HTML be ignored, and to display the page as is	?	3.2	The `text/plain` MIME type		Yes
`s`	Strike-through	?	4	`del`, CSS	<3.1^{[IE 4.0]}	1.7			1.0
`strike`	Strike-through	?	4	`del`, CSS
`u`	Underline	?	4	CSS
`xmp`	Similar to `pre` and `plaintext`, but ignores all HTML within and displays as is	?	2	`pre`, `samp`, `code`	<3.1^{[IE 3.0]}		125	3.3

Deprecated HTML attributes

Attribute	Element	Alternative solution	Trident	Gecko	WebKit	KHTML	Presto
`align`	`caption`, `div`, `fieldset`, `h1`, `h2`, `h3`, `h4`, `h5`, `h6`, `hr`, `img`, `input`, `legend`, `p`, `object`, `table`	CSS	3.1	Yes	Yes	Yes	Yes
`alink`	`body`	CSS			No
`background`	`body`	CSS			Yes
`bgcolor`	`body`, `table`, `tr`, `td`, `th`	CSS			Yes
`border`	`img`, `object`	CSS			Partial^{[note 1]}
`clear`	`br`	CSS			No
`compact`	`dl`, `ul`, `ol`	CSS	No	No	No
`color`	`basefont`, `font`	CSS	3.1	Partial^{[note 2]}^[2]	Partial^{[note 2]}
`height`	`td`, `th`	CSS		Yes	Yes
`hspace`	`img`, `object`	CSS		Yes
`language`	`script`	The `type` attribute		No^{[citation needed]}
`link`	`body`	CSS		Yes
`noshade`	`hr`	CSS
`nowrap`	`td`, `th`	CSS
`size`	`basefont`, `font`, `hr`	CSS
`start`	`ol`	None
`text`	`body`	CSS
`type`	`li`, `ul`, `ol`	CSS
`version`	`html`	DTD	No	No	No	No	No
`vlink`	`body`	CSS	Yes	Yes	Yes	Yes	Yes
`width`	`hr`, `pre`, `td`, `th`	CSS
`vspace`	`img`, `object`	CSS

Proprietary HTML elements

Tag	Function	Supported first by	Alternative solution	Trident	Gecko	WebKit	KHTML	Presto
`bgsound`	Used to add sound to the background of a website	Internet Explorer	`audio`	<3.1^{[IE 3.0]}	No	No	No	Dropped^[5]
`blink`	Used to display a blinking text	Netscape	Javascript, CSS	No	1.7	No	No	1.0
`bq`	Used to display a blockquote	WebTV, HTML 3.0	`blockquote`	No	No	No	No	Dropped^[6]
`comment`	Used to allow the addition of comments to HTML documents	Internet Explorer, WebTV	`<!-- ... -->`	3.1	No	No	No	No
`ilayer`	Inline layers	Netscape (4 only)	`iframe`	No	No	No	Partial	No
`image`	Synonym of img	?	`img`	3.1	Yes	Yes	Yes	Yes
`layer`	Used to create multiple layers of text and images which lay on top of each other in a given order	Netscape (4 only)	CSS, AJAX	No	No	No	Partial	No
`marquee`	Used to display a scrolling, marquee-like text.	Internet Explorer, WebTV	JavaScript, CSS3	3.1	1.7	125	3.3	1.0
`nobr`	Prevents any line breaks from occurring within the flow of a text	Netscape^[7]^[8]	CSS	3.1	Yes	Yes	Yes	Yes
`noembed`	Displays an alternative text for browsers which do not recognize the embed tag	Netscape	Child elements of object used as fallback	3.1	Yes	Yes	Yes	Yes
`spacer`	Adds whitespace in a layout	Netscape	CSS	No	Dropped^[9]	No	No	No
`wbr`	Placed inside a nobr element to add a line break	Netscape^[10]^[11]	Unicode character zero-width space (U+200B)	Dropped^{[note 3]}	1.7	Yes	3.1	No
`xml`^[13]	Delimits an XML data island inside an HTML page	Internet Explorer	?	3.1	No	No	No	No

Proprietary HTML attributes

Attribute	Deprecated for	Function	Supported first by	Trident	Gecko	WebKit	KHTML	Presto
`bgproperties`	`body`	Determines whether background image scrolls with the background	Internet Explorer	3.1	No	Yes	Yes	No
`bordercolor`	`body`	Sets colors for 3-D table borders in the `table`, `td`, `th`, and `tr` elements	Internet Explorer		No	Yes	Yes	No
`bordercolordark`	`body`	Sets colors for 3-D table borders in the `table`, `td`, `th`, and `tr` elements	Internet Explorer		No	No	No	No
`bordercolorlight`	`body`	Sets colors for 3-D table borders in the `table`, `td`, `th`, and `tr` elements	Internet Explorer		No	No	No	No
`controls`	`img`	Uses the `img` element to place video or audio clips	Internet Explorer		No	No	No	No
`dynsrc`	`img`	Uses the `img` element to place video or audio clips	Internet Explorer		No	No	No	No
`event`	`script`	Defines function to call for an object.	Internet Explorer		Partial	?	?	?
`for`	`script`	Defines the object to bind a scripting event.	Internet Explorer		Partial	?	?	?
`frame`	`table`	Controls the display of the outer borders of a table in the table tag	Internet Explorer		Yes	?	Yes	No
`framespacing`	`frameset`	Sets the amount of space between frames	Internet Explorer		?	?	No	No
`leftmargin`	`body`	Sets the margin between the browser window and the contents of the page	Internet Explorer	3.1	?	?	Yes	No
`loop`	`img`	Uses the `img` element to place video or audio clips	Internet Explorer	3.1	No	No	No	No
`rightmargin`	`body`	Sets the margin between the browser window and the contents of the page	Internet Explorer	3.1	?	?	No	No
`start`	`img`	Uses the `img` element to place video or audio clips	Internet Explorer		No	No	No	No
`target`	`form`	Specifies a target window or frame for the output of a form	Internet Explorer		No^[14]	?	Yes	No
`valign`	`caption`	Sets vertical alignment of table caption	Internet Explorer	3.1	?	?	No	No

Notes

^ Supported for only img.
^ ^a ^b Supported for only font.
^ Trident dropped support for wbr in version 5.0.^[12]

References

^ HTML 4 Changes, W3C, 1997-12-18, http://www.w3.org/TR/REC-html40/appendix/changes.html#h-A.3.1, retrieved 2008-05-07
^ ^a ^b Bug 3875 - (basefont) deprecated basefont element not supported, Mozilla, https://bugzilla.mozilla.org/show_bug.cgi?id=3875
^ HTML 3.2 Reference Specification, W3C, 1997-01-14, http://www.w3.org/TR/REC-html32.html#center, retrieved 2008-10-08
^ Isindex Example, http://obscuretags.com/isindex.html, retrieved 2008-05-07
^ Tommy A. Olsen (28 November 2011). "Opera Desktop Team - Glyphs and plugins". http://my.opera.com/desktopteam/blog/2011/11/28/glyphs-and-plugins. Retrieved 28 November 2011. "CORE-34613 Drop support for <bgsound>"
^ gsnedders (9 September 2010). "IRC logs: freenode / #whatwg / 2010-09-09". http://krijnhoetmer.nl/irc-logs/whatwg/20100909#l-756. Retrieved 9 September 2010. "# [17:27] <gsnedders> I know we dropped support for the bq element :P"
^ "Complete List of HTML Tags". http://www.citycat.ru/doc/HTML/IExplorer.30/ie30html.htm. Retrieved 10 October 2011.
^ "Extensions to HTML". Netscape. 1994. http://home.mcom.com/home/services_docs/html-extensions.html. Retrieved 10 October 2011.
^ Bug 531056 - [HTML5] Remove spacer support, Mozilla, https://bugzilla.mozilla.org/show_bug.cgi?id=531056
^ "Complete List of HTML Tags". http://www.citycat.ru/doc/HTML/IExplorer.30/ie30html.htm. Retrieved 10 October 2011.
^ "Extensions to HTML". Netscape. 1994. http://home.mcom.com/home/services_docs/html-extensions.html. Retrieved 10 October 2011.
^ (in German) Zeilenumbruch erlauben, Impressum, http://de.selfhtml.org/html/text/zeilenumbruch.htm#erlauben
^ XML Element | xml Object, Microsoft, http://msdn.microsoft.com/en-us/library/ms535918(v=vs.85).aspx
^ Bug 207900 - psychotekk.de - the target attribute in the form element is ignored, Mozilla, https://bugzilla.mozilla.org/show_bug.cgi?id=207900

Layout engines

Actively developed layout engines	Amaya Gecko KHTML Prince Trident WebKit

Inactive layout engines	Boxely Gazelle GtkHTML HTMLayout iCab Mariner Presto Tasman Tkhtml

Comparison of layout engines	HTML non-standard HTML HTML5 media canvas XML XHTML 1.1 MathML SVG CSS ECMAScript DOM Graphics Typography