Comparison of layout engines (non-standard HTML)
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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.
Contents
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[3]) [±]
|
44.0 Beta 8 (January 12, 2016[5][6]) [±]
45.0a2 (December 18, 2015[7]) [±] 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. |
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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[10] | 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[11] | 85 | Yes | |
center |
Centers contents | Netscape[12] | 4 | CSS | 3.1 | Yes | Yes | ||
dir |
Directory list | ? | 4 | ul , ol |
|||||
font |
Applies font styles | Netscape | 4 | CSS | |||||
isindex [13] |
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 | 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 |
|||||
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 | |||||
border |
img , object |
CSS | Partial[note 4] | ||||
clear |
br |
CSS | No | ||||
compact |
dl , ul , ol |
CSS | No | No | |||
color |
basefont , font |
CSS | 3.1 | Partial[note 5][11] | Partial[note 5] | ||
height |
td , th |
CSS | Yes | Yes | |||
hspace |
img , object |
CSS | |||||
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 | Introduced 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[14] |
blink |
Used to display a blinking text | Netscape | Javascript, CSS | No | Dropped[15] | Yes | No | 1.0 |
bq |
Used to display a blockquote | WebTV, HTML 3.0 | blockquote |
No | No | No | No | Dropped[16] |
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[17][18] | 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 | |||||
spacer |
Adds whitespace in a layout | Netscape | CSS | No | Dropped[19] | No | No | No |
wbr |
Placed inside a nobr element to add a line break | Netscape[17][18] | Unicode character zero-width space (U+200B) | Dropped[note 6] | 1.7 | Yes | 3.1 | No |
xml [21] |
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 | |||||
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 | 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[22] | ? | Yes | No | |
valign |
caption |
Sets vertical alignment of table caption | Internet Explorer | 3.1 | ? | ? | No | No |
See also
Notes
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References
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- DevGuru HTML - Non-standard elements at the Wayback Machine (archived 29 January 2013)
- OS/2 Web Explorer's proprietary HTML elements
- MSDN Handling Events with HTML elements
- ↑ Amaya Binary Releases, Most recent download link in stable
- ↑ Change log between EdgeHTML 12.10240 and 13.10586
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