Comparison of web browser engines (HTML support)

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This article compares HTML support for several web browser engines.

Support for the many new additions of the current HTML5 standard is in its own section after the items that preceded it in the history of HTML.

Explanation of the tables[edit]

Engine Status Embedded in
Blink Active Google Chrome and Chromium, plus many other browsers including Opera and Vivaldi
EdgeHTML Active Microsoft Edge browser and Universal Windows Platform apps
Gecko Active Firefox browser and Thunderbird email client, plus forks like SeaMonkey and Waterfox
WebKit Active Safari browser, Adobe AIR apps, and other browsers like Maxthon
KHTML Discontinued Konqueror browser
Presto Discontinued formerly in the Opera browser
Trident Discontinued Internet Explorer browser and Microsoft Outlook email client

Values[edit]

These indicate the level of support for the given item in each engine. By default, the most recent version of the engine is implied. However, a specific version number can be listed; when this indicates full support, it's the initial version of the engine fully supporting the item.

Value Meaning
Yes Fully supported
No Has never been supported
Partial Only some values are supported
Incorrect Not implemented correctly in all cases
Experimental May be incomplete or buggy
Nightly build Currently in development; full support is expected
Depends Only supported for the specified conditions
Dropped No longer supported

Prior to HTML5[edit]

Global structure elements[edit]

The global structure of the document.

Trident Gecko WebKit KHTML Presto
Basic structure
html <3.1[IE 5.0] Yes Yes Yes 1.0
head <3.1[IE 4.0]
body
Metadata
title <3.1[IE 4.0] 1.0 Yes Yes 1.0
meta
Headings
h1 <3.1[IE 4.0] 1.0 Yes Yes 1.0
h2
h3
h4
h5
h6
Grouping elements
div <3.1[IE 4.0] 1.0 Yes Yes 1.0
span

Text elements[edit]

Elements that represent text.

Trident Gecko WebKit KHTML Presto
Phrase
em <3.1[IE 4.0] 1.0 Yes Yes 1.0
strong
dfn
code
samp
kbd
var
cite
acronym
abbr 3.1
Quotations
blockquote <3.1[IE 4.0] 1.0 Yes Yes 1.0
q 4.0 1.8[note 1]
Subscripts and superscripts
sub <3.1[IE 4.0] 1.0 Yes Yes 1.0
sup
Lines and paragraphs
p <3.1[IE 4.0] 1.0 Yes Yes 1.0
pre
br <3.1[IE 5.0]
Marking document changes
ins <3.1[IE 4.0] 1.0 Yes Yes 1.0
del

List elements[edit]

Elements that represent lists of information.

Trident Gecko WebKit KHTML Presto
Unordered and ordered lists
ul <3.1[IE 4.0] 1.0 Yes Yes 1.0
ol
li
Definition lists
dl <3.1[IE 4.0] 1.0 Yes Yes 1.0
dt
dd

Table elements[edit]

Elements that represent tabular information.

Trident Gecko WebKit KHTML Presto
Basic table elements
table <3.1[IE 4.0] 1.0 Yes Yes 1.0
caption
tr
th
td
Row groups
thead <3.1[IE 4.0] 1.0 Yes Yes 1.0
tbody
tfoot
Column groups
colgroup <3.1[IE 4.0] 1.0 Yes Yes 1.0
col

Link elements[edit]

Hyperlinks, one of the primary forces driving the success of the World Wide Web.

Trident Gecko WebKit KHTML Presto
a <3.1[IE 4.0] 1.0 Yes Yes 1.0
link
base

Multimedia elements[edit]

Multimedia features including images, applets, video clips, and other HTML documents.

Trident Gecko WebKit KHTML Presto
Images
img <3.1[IE 4.0] 1.0 Yes Yes 1.0
Generic inclusion
object 4.0[note 2] 1.0 Yes Yes 1.0
param <3.1[IE 6.0]
Image maps
map <3.1[IE 4.0] 1.0 Yes Yes 1.0
area 5.0

Frame elements[edit]

Elements to present documents in multiple views, which may be independent windows or subwindows. Frame layout is only available in the frameset profiles. All frames are not available in XHTML 1.1 (use generic object elements instead for inline frames).

Trident Gecko WebKit KHTML Presto
Frame layout
frameset <3.1[IE 4.0] 1.0 Yes Yes 1.0
frame
noframes
Inline frames
iframe <3.1[IE 4.0] 1.0 Yes Yes 1.0

Form elements[edit]

The user interface controls for interacting with the web server.

Trident Gecko WebKit KHTML Presto
Basic structure
form <3.1[IE 4.0] 1.0 Yes Yes 1.0
fieldset
legend
Form controls and labels
button <3.1[IE 4.0]

[note 3]

1.0 Yes Yes 1.0
textarea <3.1[IE 4.0]
input
label 3.4.2[note 4]
List boxes (combo boxes)
select <3.1[IE 4.0] 1.0 Yes Yes 1.0
optgroup
option

Presentational elements[edit]

Elements that specify presentational information. Although not all elements are deprecated, their use is discouraged in favor of stylesheets. Deprecated elements are not available in the strict profiles and XHTML 1.1.

Trident Gecko WebKit KHTML Presto
Font styles
b <3.1[IE 4.0] 1.0 Yes Yes 1.0
i
big
small
tt
Horizontal rules
hr <3.1[IE 4.0] 1.0 Yes Yes 1.0

Stylesheet elements[edit]

The ways to apply stylesheets (CSS) to the document.

Trident Gecko WebKit KHTML Presto
<link rel="style" … /> <3.1[IE 4.0] 1.0 Yes Yes 1.0
style 6.0[note 5]

Script elements[edit]

Elements for embedding client-side script (JavaScript). See also DOM Events for a list of attributes used to attach an event handler to an element.

Trident Gecko WebKit KHTML Presto
script <3.1[IE 5.0] 1.0 Yes Yes 1.0
noscript Incorrect[note 6]

Language elements[edit]

Elements related to language information.

Trident Gecko WebKit KHTML Presto
bdo <3.1[IE 5.0] 1.0 Yes Partial[note 7] 1.0

Generic attributes[edit]

Attributes that can be used in any elements.

Trident Gecko WebKit KHTML Presto
Element identifiers
id <3.1[IE 3.0] 1.0 Yes Yes 1.0
class
Inline styles
style <3.1[IE 3.0] 1.0 Yes Yes 1.0
Advisory information
title <3.1[IE 4.0] 1.0 Yes Yes 1.0
Language information
lang <3.1[IE 4.0] 1.0 Yes Yes 1.0
dir <3.1[IE 5.0]

Non-standard items[edit]

In the early years of the 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 and Microsoft, who had competing 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.

These tables list browser engine support for non-standard HTML items.

Element Function Supported first by Deprecated in HTML version Alternative solution Trident Gecko WebKit KHTML Presto
applet Insert an applet HotJava 4[6] 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[7] 85 Yes
center Centers contents Netscape[8] 4 CSS 3.1 Yes Yes
dir Directory list ? 4 ul, ol
font Applies font styles Netscape 4 CSS
isindex[9] 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
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 8]
clear br CSS No
compact dl, ul, ol CSS No No
color basefont, font CSS 3.1 Partial[note 9][7] Partial[note 9]
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
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[10]
blink Used to display a blinking text Netscape Javascript, CSS No Dropped[11] Yes No 1.0
bq Used to display a blockquote WebTV, HTML 3.0 blockquote No No No No Dropped[12]
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[13][14] 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[15] No No No
wbr Placed inside a nobr element to add a line break Netscape[13][14] Unicode character zero-width space (U+200B) Dropped[note 10] 1.7 Yes 3.1 No
xml[17] Includes XML data, either inline or from an URL, in an HTML page Internet Explorer AJAX, possibly XML namespaces 3.1 No No No No
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[18] ? Yes No
valign caption Sets vertical alignment of table caption Internet Explorer 3.1 ? ? No No


HTML5[edit]

Trident EdgeHTML Gecko WebKit Presto
section 5.0[t 1] 12 2.0[g 1][g 2] 533[w 1][w 2][w 3][w 4][w 5][w 6] 2.7.70
nav
article
aside
hgroup
header
footer
ping No No Disabled Yes No
time No No 22.0[g 3] No 2.8.146
mark 5.0[t 1] 12 2.0[g 4] Yes[w 7] 2.7.70
ruby,[19] rt, rp 3.1[t 2] 12 38.0[g 5] 533[w 8][w 9] No
dialog[20] No No No[g 6] Only in Chrome[w 10] No
figure 5.0[t 1] 12 2.0[g 7] Yes[w 11] 2.7.70
figcaption
embed <3.1[IE 3.0] 12 1.7 85 1.0
video 5.0 (Partial)[t 3][t 4] 12 15.0[g 8] 525 2.5[a][b]
audio
source
canvas Partial 1.9.2[g 9] Partial 2.0[p 4]
Inline MathML No No 2.0 No[w 12][w 13] 2.1[c]
Inline SVG 5.0[t 3] 12 Yes[w 14] 2.9.220[p 6]
details No No 47[g 10] Yes[w 15] No
summary Yes[w 15]
command No[g 11] No
menu 8.0[g 12] No[w 16] 2.8[p 7]
bdi 10.0[g 13] 528[w 17] No
data No No 22.0[g 14] No No
picture No 13 38.0[g 15] No[w 18] No
Trident EdgeHTML Gecko WebKit Presto

Element-specific attributes[edit]

Attribute Element Trident EdgeHTML Gecko WebKit Presto
manifest html 6.0[21] 12 1.9 Yes 2.6[p 8][p 9]
sizes link No 13 8.0 (only mobile)[g 16][g 17] Yes[w 19] No
charset meta 4.0[22] 12 1.9.2 Yes 2.5.24
scoped style No No 21.0[g 18] No[w 20] No
async script 6.0 12 1.9.2[g 19] Yes[w 21]
reversed ol No No 18.0[g 20] Yes[w 22]
download[citation needed] a,area No 13 20.0[g 21] Yes
sandbox iframe 6.0[t 5] 12 17.0[g 22] 533[w 23]
seamless iframe No No No[g 23] No[w 24]
Attribute Element Trident EdgeHTML Gecko WebKit Presto

Global attributes[edit]

Trident Gecko WebKit Presto
translate[23] No
Datasets (data-*) No 6.0[g 24] Yes[w 25] 2.8[p 10]
contextmenu 8.0[g 25] No[w 16] No
hidden 2.0[g 26] Yes[w 26] 2.7.70
contenteditable[24] <3.1[IE 5.5] 1.9 Yes 2.0
spellcheck[25] 6.0 1.8[g 27] Incorrect[w 27] 2.8[p 11]
draggable 1.9.1[g 28] 533[w 28] 2.10.270
dropzone No No[g 29] Yes 2.10.270
Trident Gecko WebKit Presto

Form elements and attributes[edit]

Many of these features can be emulated with third-party libraries.[citation needed]

Trident Gecko[g 30] WebKit[w 29] Presto[p 12]
Attributes
autocomplete 3.1 Yes Yes 2.0
list 6.0[t 6] 2.0[g 31] Yes[w 30]
required 6.0[t 7] 2.0[g 32] 528[d][w 31]
multiple 6.0[t 8] 1.9.2[e][g 33] 526[e][w 32] 2.7[p 13]
pattern 6.0[t 9] 2.0[g 34] 528[d][w 33][w 31] 2.0
min, max 6.0[t 10][t 11] 16.0[g 35][g 36] Yes[w 34]
step 6.0[t 12] 16.0[g 37] 528[w 35]
placeholder 6.0[t 13] 2.0[g 38] Yes 2.7[p 13]
form No 2.0[g 39] Yes[w 36] 2.0
autofocus 6.0[t 14] 2.0[g 40] 528[w 37]
maxlength 6.0[t 15] 2.0[g 41] 528[w 38]
novalidate 6.0[t 16] 2.0[g 42] 528[w 39] 2.8[p 11]
control No 2.0[g 43] No No
accept No 2.0[g 44] Yes[w 40] Yes
formtarget 6.0[t 17] 2.0[g 45] Yes[w 41] 2.8[p 11]
formaction 6.0[t 18] 2.0[g 46] Yes[w 41] 2.8[p 11]
formmethod 6.0[t 19] 2.0[g 47] Yes[w 41] 2.8[p 11]
formenctype 6.0[t 20] 2.0[g 47] Yes[w 41] 2.8[p 11]
formnovalidate 6.0[t 21] 2.0[g 48] 528[w 39] 2.8[p 11]
disabled (fieldset element) <3.1 2.0 No 2.7
Elements
datalist 6.0[t 22] 2.0[g 49] Yes[w 42] 2.0
keygen[26] No[t 23] 1.0[g 50] 125 1.0
output No 2.0[g 51] Yes[w 43] 2.0
progress 6.0[t 24] 6.0[g 52] Yes[w 44] 2.7[p 13]
meter No 16.0[g 53] Yes[w 45]
Input types
search 6.0[t 25] 2.0[g 54] 312[w 46] 2.7[p 13]
tel 6.0[t 26] 2.0[g 55] 528[w 47]
url 6.0[t 27] 2.0[g 56] 528[w 47] 2.0
email 6.0[t 28] 2.0[g 57] 528[w 47]
datetime No No[g 58] No[w 48][w 49]
date No Yes
month No
week No
time No
datetime-local No
number 6.0[t 29] 29.0[g 59] 528[w 47]
range 6.0[t 30] 23.0[g 60] Yes
color No 29.0[g 61] Yes[w 50] 2.7[p 13]
Trident Gecko WebKit Presto

APIs[edit]

Trident EdgeHTML Gecko WebKit Presto
getElementsByClassName[27] 5.0[t 31] 12 1.9[g 62] 525 2.1
registerProtocolHandler No No 1.9[f][dead link] Yes[w 51] 2.10[p 14]
registerContentHandler 1.8[g]
Cross-document messaging 4.0 12 1.9[g 65] Yes 2.0
Drag-and-drop 6.0 12 1.9.1[g 28] Yes 2.10.270[p 15]
pushState() and replaceState() 6.0[t 32] 12 2.0[g 66] 528[w 52] 2.9[p 16]
Trident EdgeHTML Gecko WebKit Presto

Other features[edit]

Trident Gecko WebKit Presto
Microdata No 16.0[g 67] No[w 53] Yes[p 17]
HTML5 Tokenizer 6.0[t 33] 2.0[g 68] Yes[w 54] 2.10[p 18]
HTML5 Tree Builder Yes[w 14]
HTML5 Fragment Parser Yes
<a rel="noreferrer"> No 33.0[g 69] Yes[w 55] No
window.onhashchange 4.0[t 34] 1.9.2[g 70] 528[w 56] 2.6[p 19]
element.classList No 1.9.2[g 71] Yes[w 57] 2.8[p 11]
dir="auto" No 20.0[g 72] 528+[w 58] No
Trident Gecko WebKit Presto

Next-generation additions[edit]

The WHATWG version of HTML also includes additional features that are not technically HTML5, which are described as "next-generation additions still in development" in the specification.[28]

Trident EdgeHTML Gecko WebKit Presto
<track> 6.0[t 35] 12
<a ping> No No Depends[g 73][h] Depends[w 59][i]

Related specifications[edit]

Trident EdgeHTML Gecko WebKit Presto
main element[29] No 12 21.0[g 76] Yes[w 60] No
template element[30] No 13 No Yes[w 61] No
Selectors API[31] 4.0[t 36] 12 1.9.1[g 77] 525[w 62] 2.2[p 20]
Web Storage[32] 4.0 12 1.9.1[g 78] 525 2.5[p 21]
Indexed Database API[33] 5.0[t 37] 12 16.0[g 79] Partial No
Web SQL Database (obsolete)[34] No No No[g 80] Yes[w 63] 2.5[p 21]
File API[35] 5.0 12 Yes[g 81] Yes[w 64][w 65] 2.8[p 22]
File API: Writer[36] 5.0 No No[g 82] Partial[w 66] No
File API: Directories and System[37] No No No[g 83] Yes[w 67]
Media Capture API[38] 2.0[j] No 2.10[p 23]
Server-sent events[39] 6.0[g 85] Yes[w 68] 2.7[p 24][p 25]
WebSocket[40] 6.0[t 38] 12 11.0[g 86] 533 2.11[k]
Web Workers[41][42] 6.0[t 39] 12 1.9.1[g 87] Yes 2.6[p 8][p 9]
Geolocation API[43] 5.0[t 40] 12 1.9.1[g 88] 533[w 69] 2.6[l]
Offline Web applications[44] 6.0[t 41] 12 1.9.1[g 89] Yes 2.6[p 8][p 9]
Web Notifications[45] No No 22.0[46][47] only in Chrome[48] 25[p 31]
Trident EdgeHTML Gecko WebKit Presto

Media functions[edit]

The HTML5 specification defines several tags which allow video and audio to be included natively and semantically in HTML markup.

Element attributes[edit]

Media elements allow some attributes to be set directly in the tag.

Trident Gecko WebKit Presto
<audio> attributes
src 5.0[t 1] 1.9.1 525 2.5
preload 2.0[note 11][g 90] Experimental[note 11]
autoplay 1.9.1 2.5
loop 11.0[g 91]
controls 1.9.1
<video> attributes
src 5.0[t 1] 1.9.1 525 2.5
preload 2.0[note 11][g 90] Experimental[note 11]
autoplay 1.9.1 2.5
loop 11.0[g 91]
controls 1.9.1
poster 1.9.2[g 92]
width 1.9.1
height
<source> attributes
src 5.0[t 1] 1.9.1 525[w 70] 2.5
type
media 15.0[g 93]
<track> attributes
kind 6.0[t 42] 24.0[g 94] Yes[w 71] No
label
src
srclang

DOM attributes[edit]

Some attributes related to media elements are exposed in the DOM.

Trident Gecko WebKit Presto[p 32]
Error state
MediaError 5.0 [t 43] 1.9.1 ? 2.5
Network state
src 5.0[t 1] 1.9.1 ? 2.5
currentSrc
networkState
preload 2.0[note 11][g 90] No
buffered 2.0[g 95]
load() 1.9.1 2.5
canPlayType() 533[w 72]
Ready state
readyState 5.0[t 1] 1.9.1 ? 2.5
seeking
Playback state
currentTime 5.0[t 1] 1.9.1 ? 2.5
startTime No
duration 1.9.1
paused
defaultPlaybackRate 20.0[g 96] No
playbackRate
played 15.0[g 97]
seekable 8.0[g 98]
ended 1.9.1 2.5
autoplay
loop 11.0[g 91]
play() 1.9.1
pause()
Controls
controls 5.0[t 1] 1.9.1 ? 2.5
volume
muted

DOM events[edit]

Media elements introduce new events to handle conditions which apply only to those elements, such as pausing/resuming.

Trident Gecko[g 99] WebKit Presto
loadstart 5.0[t 44] 1.9.1 ? ?
progress
suspend 1.9.2
abort 1.9.1
error
emptied
stalled 8.0[g 100]
play 1.9.1
pause
loadedmetadata
loadeddata
waiting
playing No
canplay 1.9.1
canplaythrough
seeking
seeked
timeupdate
ended
ratechange
durationchange
volumechange

Video format support[edit]

This table documents support for video codecs by the <video> element.

Trident edgeHTML Gecko WebKit Presto
Ogg Theora Manual install[note 12] 1.9.1[g 101] Depends[note 13] 2.5
H.264 5.0[t 46] 33.0[49][g 102] Depends (525)[note 13][w 78] Depends[note 14]
WebM VP8 Manual install[note 12] Yes[50] 2.0[g 103][g 104] Depends (534)[w 79] 2.6.30[p 34][p 35][p 36]

Audio format support[edit]

This table documents support for audio codecs by the <audio> element.

Trident edgeHTML Gecko WebKit Presto
Ogg Vorbis Manual install[note 12] 1.9.1[g 101] Depends[note 13] 2.5
WAV PCM 525[note 13] 2.0
MP3 5.0[t 47] No[g 105] Depends[note 14]
AAC No
Speex Manual install[note 12] No[g 106] Depends[note 13] No
Opus No Yes[50] 15.0[g 107] Depends[note 13] No

Canvas functions[edit]

The following tables compare support for the drawing APIs of the Canvas element, a feature of HTML5. These tables compare native support by web browsers, without any plugins, add-ons or ECMAScript workarounds.

Trident Gecko WebKit Presto
getContext 5.0 1.8 Yes 2.0
toDataURL 1.8[g 108] Yes[w 80] 2.1[note 15]

Supported contexts[edit]

Trident Gecko WebKit Presto
2d 5.0 1.9.1 Partial 2.6
WebGL 7.0[t 48] Depends[g 109] Depends[w 81] 2.9.220[p 37]

Rendering Context 2D[edit]

Trident[t 49] Gecko[g 110] WebKit[w 82] Presto[p 38][p 39]
The canvas state
save 5.0 1.8 Yes 2.0
restore
Transformations
scale 5.0 1.8 Yes 2.0
rotate
translate
transform 2.6[note 16][p 40][p 41][p 42]
setTransform 2.6[note 16]
Compositing
globalAlpha 5.0 1.8 Yes 2.0
globalCompositeOperation
Colors and styles
strokeStyle 5.0 1.8 Yes 2.0
fillStyle
createLinearGradient
createRadialGradient
createPattern
Line styles
lineWidth 5.0 1.8 Yes 2.0
lineCap
lineJoin
miterLimit
Shadows
shadowOffsetX 5.0 1.9.1[g 111] Yes 2.4[note 17]
shadowOffsetY
shadowBlur
shadowColor
Simple shapes
clearRect 5.0 1.8 Yes 2.0
fillRect
strokeRect
Complex shapes
beginPath 5.0 1.8 Yes 2.0
closePath
moveTo
lineTo
quadraticCurveTo 1.8.1[note 18]
bezierCurveTo 1.8
arcTo 1.8.1[g 112]
rect 1.8
arc
fill
stroke
clip
isPointInPath
Focus management
drawFocusRing No 28.0[g 113] No No
Text
font 5.0 1.9.1[note 19] Yes No
textAlign 2.6
textBaseline
fillText
strokeText
measureText
Images
drawImage 5.0 1.8 Yes 2.0
createImageData 1.9.1[g 115][g 116] 2.7[p 43]
getImageData 1.9[g 116] 2.6[note 16]
putImageData 2.0[g 117][g 116]

Notes[edit]

  1. ^ <q> does not support nested quotes prior to Gecko 1.8.[1]
  2. ^ For images, a frame will be added to the object. Other content types are not supported and the element is incorrectly implemented as an ActiveX wrapper. Nested objects fallback mechanism is not supported prior to version 7.[2]
  3. ^ Prior to Internet Explorer 8.0 (trident 4.0), and in earlier compatibility modes, the innerText is submitted instead of the value attribute.[3]
  4. ^ <label> was focusable prior to KHTML 3.4.2.[citation needed]
  5. ^ Internet Explorer 9 (trident 5.0) and earlier is limited to 31 <style> elements.[4][5]
  6. ^ Trident doesn't hide CSS backgrounds and borders on a <noscript> element when scripting is enabled[citation needed].
  7. ^ While alphabetic and alphanumeric words are affected, numeric (numbers only) words are not.[citation needed]
  8. ^ Supported for only img.
  9. ^ a b Supported for only font.
  10. ^ Trident dropped support for wbr in version 5.0.[16]
  11. ^ a b c d e Supports preload under the older name autobuffer.
  12. ^ a b c d Google released a WebM component for Media Foundation to allow the playback of WebM files in IE9 through the standard HTML5 <video> tag.[t 45] Xiph.org distributes OpenCodecs package, which amends Google's VP8 decoder with DirectShow-based codecs for Ogg Theora and Ogg Vorbis. VLC media player comes with "Web plugin" that uses VLC for playing multimedia from <video> and <audio> tags, enabling support for all formats VLC supports.
  13. ^ a b c d e f WebKit on Mac OS X uses QuickTime, and supports whatever formats that does.[w 73] By default, this includes H.264, MP3, AAC and WAV PCM, but not Ogg Theora or Vorbis. These are supported only if installed as third-party codecs, such as XiphQT. Google Chrome supports Theora, Vorbis, WebM, and MP3.[w 74] Chromium can be compiled to support anything that FFmpeg supports, and may or may not support patented formats such as H.264 and MP3.[w 75] Origyn Web Browser for MorphOS uses also FFmpeg for playing HTML5 media content.[w 76][w 77]
  14. ^ a b On Linux and FreeBSD, Presto 2.5 uses the system version of the GStreamer library, and is able to play any formats supported by GStreamer (including H.264, MP3, AAC and others, if codecs are installed). On other platforms, it only supports Ogg Theora for video; and Ogg Vorbis and WAVE PCM for sound.[p 33]
  15. ^ Presto 2.0 had partial support for this property.
  16. ^ a b c Opera 9.5(Presto 2.1) support table claims support for this, but support tables for Presto 2.1.1 up to 2.5 indicate that this property is not supported.
  17. ^ Prior to version 2.4, Presto only had partial support for this property.
  18. ^ Incorrect in Gecko 1.8
  19. ^ Gecko had experimental support in version 1.9, with different names.[g 114]
  1. ^ Beginning in 2007,[p 1] several experimental builds have been released with Ogg Theora support. Full support for the video element is included in Presto 2.5.[p 2]
  2. ^ Presto added very limited support for the ECMAScript API related to the audio element in version 2.0 using only the WAV PCM codec, while not implementing the element itself.[p 3] Full support for the audio element with the Ogg Vorbis and WAV codecs is included in Presto 2.5.[p 2]
  3. ^ MathML for CSS, XHTML only[p 5]
  4. ^ a b Form validation disabled in Safari Can I use... Support tables for HTML5, CSS3, etc.
  5. ^ a b For file inputs only.
  6. ^ Limited to the feed protocol in 1.8; fully supported in 1.9.[g 63]
  7. ^ Limited to feed MIME types in 1.8 and 1.9.[g 64]
  8. ^ The ping attribute is disabled by default, due to privacy concerns.[g 74][g 75]
  9. ^ The ping attribute is disabled by default, thus needs to be manually enabled by each port
  10. ^ Currently partially supported in nightly builds for the Linux platform.[g 84]
  11. ^ WebSocket support was added in Presto 2.7[p 26] but was disabled due to security reasons.[p 27] In Presto 2.11 protocol implementation was updated to version RFC 6455[p 28] which resolved security issue.
  12. ^ Geolocation support was added in Presto 2.5, but was not enabled by default until 2.6.[p 29][p 30][p 8][p 9]

References[edit]

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  16. ^ Zeilenumbruch erlauben (in German), Impressum 
  17. ^ XML Element | xml Object, Microsoft 
  18. ^ Bug 207900 - psychotekk.de - the target attribute in the form element is ignored, Mozilla 
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  30. ^ HTML Templates, W3C, 14 February 2013 
  31. ^ Selectors API Level 1, W3C 
  32. ^ Web Storage, W3C 
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  36. ^ File API: Writer, W3C, 26 October 2010 
  37. ^ File API: Directories and System, W3C, 26 October 2010 
  38. ^ Media Capture API, W3C 
  39. ^ Server-Sent Events, W3C 
  40. ^ The Web Sockets API, W3C 
  41. ^ Web Workers, W3C 
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  43. ^ Geolocation API Specification, W3C 
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  45. ^ Web Notifications, W3C 
  46. ^ Available only in Firefox Mobile as of Gecko 2.0 
  47. ^ 594543 – Implement Desktop Notifications 
  48. ^ There is a bug in Chrome but is working 
  49. ^ via OpenH264
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Trident
  1. ^ a b c d e f g h i j Internet Explorer Platform Preview Guide for Developers, Microsoft 
  2. ^ Ruby 
  3. ^ a b Bisson, Simon (17 September 2010), Microsoft previews Internet Explorer 9 with HTML5 support, ZDNet 
  4. ^ Hachamovitch, Dean (23 June 2010), HTML5, Native: Third IE9 Platform Preview Available for Developers, Microsoft 
  5. ^ Rossi, Jacob (14 July 2011), Defense in Depth: Locking Down Mash-Ups with HTML5 Sandbox, Microsoft 
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  7. ^ "required attribute | required property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  8. ^ "multiple property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  9. ^ "pattern attribute | pattern property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  10. ^ "min attribute | min property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  11. ^ "max attribute | max property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  12. ^ "step property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  13. ^ "placeholder attribute | placeholder property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  14. ^ "autofocus attribute | autofocus property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  15. ^ "maxlength attribute | maxLength property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  16. ^ "noValidate property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  17. ^ "formTarget property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  18. ^ "formAction attribute | formAction property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  19. ^ "formMethod attribute | formMethod property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  20. ^ "formEnctype attribute | formEnctype property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  21. ^ "formNoValidate attribute | formNoValidate property (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  22. ^ "datalist object (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  23. ^ PRB: HTML Tag KEYGEN Not Supported in Internet Explorer, Microsoft 
  24. ^ "Progress element | Progress object (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  25. ^ "input type=search object (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  26. ^ "input type=tel element | input type=tel object (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  27. ^ "input type=url element | input type=url object (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  28. ^ "input type=email element | input type=email object (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  29. ^ "input type=number element | input type=number object (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  30. ^ "input type=range element | input type=range object (Internet Explorer)". Microsoft. Retrieved 16 November 2012. 
  31. ^ getElementsByClassName, Microsoft 
  32. ^ HTML5 History in IE10, Microsoft 
  33. ^ HTML5 Parsing in IE10, Windows Internet Explorer Engineering Team, 6 July 2001 
  34. ^ onhashchange Event, Microsoft 
  35. ^ "track element | track object (Internet Explorer)". Microsoft. Retrieved 29 November 2012. 
  36. ^ Resig, John (6 March 2008), JavaScript in Internet Explorer 8 
  37. ^ IndexedDB Prototype Available for Internet Explorer 
  38. ^ WebSockets in Windows Consumer Preview, IE Engineering Team 
  39. ^ Leithead, Travis (2 July 2011), Web Workers in IE10: Background JavaScript Makes Web Apps Faster, Microsoft 
  40. ^ Acting on Feedback: IE9 Release Candidate Available for Download 
  41. ^ "Application Cache API ("AppCache") (Windows)". Microsoft. Retrieved 17 November 2012. 
  42. ^ "track element - track object (Internet Explorer)". Microsoft. Retrieved 12 July 2013. 
  43. ^ MSDN HTMLMediaError Object for Internet Explorer 9, Microsoft 
  44. ^ "video object". Microsoft. Retrieved 12 July 2013. 
  45. ^ Jazayeri, Mike (2011-01-14), More about the Chrome HTML Video Codec Change, Google 
  46. ^ McCracken, Harry (2010-03-16), Microsoft Previews the Revamped Internet Explorer 9 Platform, Technologizer 
  47. ^ Branscombe, Mary (2010-03-16), Microsoft previews Internet Explorer 9, TechRadar UK 
  48. ^ "Introducing IE11: The Best Way to Experience the Web on Modern Touch Devices". Microsoft. Retrieved 8 November 2013. 
  49. ^ Internet Explorer Platform Preview Release Notes 
Gecko
  1. ^ Bug 559284 – Support for HTML5 sectioning elements (article, aside, footer, header, hgroup, nav, section): style as display:block, Mozilla 
  2. ^ Bug 562008 – HTML5 section DOM elements should be of type HTMLElement, Mozilla 
  3. ^ Bug 629801 – Implement HTML5 , Mozilla 
  4. ^ Bug 485377 – Implement HTML5's <mark> tag, Mozilla 
  5. ^ Bug 33339 – HTML5 <ruby> support, Mozilla, retrieved 2014-12-03 
  6. ^ Implement the HTML5 dialog element, Mozilla 
  7. ^ Implement the figure element, Mozilla 
  8. ^ Support media attribute of source elements, Mozilla 
  9. ^ Canvas – MDC, Mozilla 
  10. ^ Bug 591737 – Support for HTML5's <details> and <summary>, Mozilla 
  11. ^ Implement the HTML5 command API, Mozilla 
  12. ^ Implement HTML5 toolbar menus, Mozilla 
  13. ^ Bug 613149 – Support HTML5 bdi element and CSS property unicode-bidi: isolate, Mozilla 
  14. ^ Bug 839371 – Implement HTML5 element, Mozilla 
  15. ^ Bug 870022 – Implement `picture` element, Mozilla 
  16. ^ Bug 596650 – Use the "sizes" attribute to select the best web app icon, Mozilla 
  17. ^ Bug 441770 – Add 'sizes' getter/setter to link elements, Mozilla 
  18. ^ Bug 508725 – Implement HTML 5 scoped attribute on STYLE tag, Mozilla 
  19. ^ Bug 503481 – Implement async attribute of script element, Mozilla 
  20. ^ Bug 601912 – HTML 5's <li> reversed attribute not supported, Mozilla 
  21. ^ Bug 676619 – Implement proposed download attribute, Mozilla 
  22. ^ Bug 341604- Implement IFRAME's sandbox attribute, Mozilla 
  23. ^ Bug 631218 – implement the HTML5 seamless attribute for the iframe element, Mozilla 
  24. ^ Bug 560112 – Implement HTML5 dataset attribute, Mozilla 
  25. ^ Changes for web developers, Mozilla, archived from the original on 2011-10-07 
  26. ^ Bug 567663 – Implement the hidden attribute, Mozilla 
  27. ^ Controlling spell checking in HTML forms, Mozilla 
  28. ^ a b Blizzard, Christopher (15 July 2009), HTML5 drag and drop in Firefox 3.5 
  29. ^ Bug 723008 – Implement dropzone attribute, Mozilla 
  30. ^ User:Mounir.lamouri/HTML5 Forms, Mozilla  External link in |title= (help)
  31. ^ Bug 556007 – Implement list attribute, Mozilla 
  32. ^ Bug 345822 – Implement required attribute for <input type="text">, <textarea>, Mozilla 
  33. ^ Bug 523771 – Support <input type=file multiple>, Mozilla 
  34. ^ Bug 345512 – Implement pattern attribute for <input type="text">, <textarea>, Mozilla 
  35. ^ Bug 635499- Implement the max attribute, Mozilla 
  36. ^ Bug 635553- Implement the min attribute, Mozilla 
  37. ^ Bug 556009 – Implement step attribute, Mozilla 
  38. ^ Bug 457800 – Implement placeholder attribute for text input fields, Mozilla 
  39. ^ Bug 588683 – Implement form attribute, Mozilla 
  40. ^ Bug 546995 – Implement autofocus attribute for some form elements, Mozilla 
  41. ^ Bug 535043 – Support maxlength on textarea, Mozilla 
  42. ^ Bug 556013 – Implement novalidate attribute for form elements, Mozilla 
  43. ^ Bug 562932 – Implement control attribute for label element, Mozilla 
  44. ^ Bug 377624 – Implement the accept attribute for the form and file upload controls form "image/*", Mozilla ,Bug 565274 – Implement the accept attribute for the form and file upload controls for custom MIME types, Mozilla 
  45. ^ Bug 566064 – HTMLInputElement and HTMLButtonElement should implement formtarget attribute which override HTMLFormElement target attribute, Mozilla 
  46. ^ Bug 566160 – HTMLInputElement and HTMLButtonElement should implement formaction attribute which override HTMLFormElement action attribute, Mozilla 
  47. ^ a b Bug 582412 – Implement @formmethod, @formenctype, Mozilla 
  48. ^ Bug 589696 – Implement formnovalidate attribute for submit controls, Mozilla 
  49. ^ Bug 555840 – Implement datalist element, Mozilla 
  50. ^ Bug 101019 – Implement keygen element, Mozilla 
  51. ^ Bug 346485 – Implement Web Forms 2 <html:output/>, Mozilla 
  52. ^ Bug 514437 – Implement HTML 5 progress element, Mozilla 
  53. ^ Bug 555985 – Implement meter element, Mozilla 
  54. ^ Bug 456229 – Implement <input type="search"> for compatibility with Safari, Mozilla 
  55. ^ Bug 557620 – Implement <input type="telephone">, Mozilla 
  56. ^ Bug 344615 – Implement <input type="url">, Mozilla 
  57. ^ Bug 555559- Implement <input type="email">, Mozilla 
  58. ^ Bug 446510 – Implement <input type="date"> and other date controls, Mozilla 
  59. ^ Bug 344616 – Implement <input type="number">, Mozilla 
  60. ^ Bug 344618 – Implement <input type="range">, Mozilla 
  61. ^ Bug 547004 – Implement <input type="color">, Mozilla, retrieved 2010-02-18 
  62. ^ Bug 357450 – Implement getElementsByClassName, Mozilla 
  63. ^ window.navigator.registerProtocolHandler, Mozilla, archived from the original on 4 June 2011 
  64. ^ Navigator.registerContentHandler(), Mozilla 
  65. ^ Bug 387706 – (postMessage) Implement HTML5's cross-document messaging API (postMessage), Mozilla 
  66. ^ Bug 500328 – Add support for HTML5 History.pushState(), History.replaceState() methods, Mozilla 
  67. ^ Bug 591467 – Implement HTML5 Microdata API, Mozilla 
  68. ^ Bug 373864 – Replace HTML parser with an HTML5 parser, Mozilla 
  69. ^ Bug 530396 – Support for <a rel="noreferrer"> functionality, Mozilla 
  70. ^ Bug 385434 – Add support for HTML5 onhashchange (event for named anchor changes), Mozilla 
  71. ^ Bug 501257 – Implement HTML 5's HTMLElement.classList property, Mozilla 
  72. ^ Bug 548206 – Implement the auto value for the HTML dir attribute, Mozilla 
  73. ^ Bug 319368 – Implement <a ping>, Mozilla 
  74. ^ Bug 324645 – <a ping> support should be opt-in, not opt-out, for Gecko-based apps, Mozilla 
  75. ^ Bug 319368 – Implement <a ping> (Comment 64), Mozilla 
  76. ^ Bug 820508 – Add support for <main> element, Mozilla 
  77. ^ document.querySelector 
  78. ^ DOM Storage, Mozilla 
  79. ^ Implement Indexed Database API, Mozilla 
  80. ^ Bug 416327 – Implement Client-side database storage, Mozilla 
  81. ^ Using files from web applications, Mozilla 
  82. ^ Bug 557540 – Implement File API: Writer, Mozilla 
  83. ^ FileSystem API, Mozilla 
  84. ^ Bug 692955 – Camera support for desktop, Mozilla 
  85. ^ Bug 338583 – Add support for Server-Sent DOM Events (Remote Events), Mozilla 
  86. ^ Bug 472529 – Support for Web sockets' HTML5 Draft Recommendation, Mozilla 
  87. ^ Bug 437152 – implement worker threads, Mozilla 
  88. ^ Using geolocation, Mozilla 
  89. ^ Offline resources in Firefox, Mozilla 
  90. ^ a b c Bug 548523 - HTML 5 media attribute 'autobuffer' has been renamed to 'preload', Mozilla 
  91. ^ a b c Bug 449157 - Implement the looping attributes in media elements, Mozilla 
  92. ^ Bug 449156 - Implement the poster attribute for the <video> element, Mozilla 
  93. ^ Bug 449363 - Support media attribute of <source> elements, Mozilla 
  94. ^ Bug 629350 - Implement the track element, Mozilla 
  95. ^ Bug 462957 - Implement nsIDOMHTMLMediaElement::GetBuffered(), Mozilla 
  96. ^ Bug 495040 - Implement playbackRate, Mozilla 
  97. ^ Bug 462959 - Implement nsIDOMHTMLMediaElement::GetPlayed(), Mozilla 
  98. ^ Bug 462960 - Implement nsIDOMHTMLMediaElement::GetSeekable(), Mozilla 
  99. ^ Using audio and video in Firefox - Media events, Mozilla 
  100. ^ Bug 481082 - Video controls should listen for |stalled| event, Mozilla 
  101. ^ a b Shepherd, Eric (2010-01-28), Media formats supported by the audio and video elements, Mozilla, retrieved 2009-10-11 
  102. ^ Bug 799318 - [meta] Support H.264/AAC/MP3 video/audio playback on desktop Firefox, Mozilla 
  103. ^ Bug 566243 - Merge mozilla-webmedia repository to mozilla-central, Mozilla 
  104. ^ Firefox WebM Builds, Mozilla 
  105. ^ Bug 562730 - Reproducing Mp3 files with html5, Mozilla 
  106. ^ Bug 476752 - support the speex voice codec in <audio> and <video> elements, Mozilla 
  107. ^ Bug 674225 - support the Opus voice codec in <audio> and <video> elements, Mozilla 
  108. ^ https://developer.mozilla.org/en/HTML/Element/canvas
  109. ^ WebGL - MDC, Mozilla 
  110. ^ Canvas tutorial - MDC 
  111. ^ Bug 310682 - Implement shadows for <html:canvas>, Mozilla 
  112. ^ Bug 333613 – update canvas on branch, Mozilla 
  113. ^ Bug 540456 - Support HTML5 canvas drawFocusRing(), Mozilla 
  114. ^ Bug 436904 - implementing Canvas text spec, Mozilla 
  115. ^ Bug 433004 - Support canvas.getContext("2d").createImageData(), Mozilla 
  116. ^ a b c Pixel manipulation with canvas - MDC 
  117. ^ Bug 498826 - canvas putImageData doesn't implement optional arguments, Mozilla 
Webkit
  1. ^ Bug 32936 – HTML5 <section> element support, WebKit 
  2. ^ Bug 27937 – Implement HTML5 nav element, WebKit 
  3. ^ Bug 32942 – HTML5 <article> element support, WebKit 
  4. ^ Bug 32943 – HTML5 <aside> element support, WebKit 
  5. ^ Bug 33369 – Implement HTML5 <hgroup> element., WebKit 
  6. ^ Bug 32944 – HTML5 <header> and <footer> elements support, WebKit 
  7. ^ Bug 41144 – Implement the HTML5 <mark> element., WebKit 
  8. ^ Bug 28420 – Implement HTML5 <ruby> rendering, WebKit 
  9. ^ Steiner, Roland (20 January 2010), "Ruby Rendering in WebKit", Surfin’ Safari, WebKit, retrieved 2010-01-21 
  10. ^ Bug 84635 – Implement the DIALOG element, WebKit 
  11. ^ Bug 50684 – Default styling rules for the figure and figcaption elements, WebKit 
  12. ^ "Google subtracts MathML from Chrome, and anger multiplies". CNET. CBS Interactive. 5 November 2013. 
  13. ^ Bug 42373 – Changes to enable MathML, WebKit 
  14. ^ a b Seidel, Eric (5 August 2010). "The HTML5 Parsing Algorithm". Surfin' Safari. WebKit Project. Retrieved 5 August 2010. 
  15. ^ a b Bug 50309 – HTML5 <details> and <summary> initial implementation, WebKit 
  16. ^ a b Bug 50555 – implement the HTML5 "context menu" feature (contextmenu attribute), WebKit 
  17. ^ Bug 50913 – [BiDi] Add support for the BDI element, WebKit 
  18. ^ Bug 116963 – (picture) Implement `picture` element, WebKit 
  19. ^ Bug 37674 – Implement sizes attribute for link tag from HTML5, WebKit 
  20. ^ Bug 49142 – Implement HTML5 style scoped attribute, WebKit 
  21. ^ Bug 20710 – WebKit should support defer and async on script elements, WebKit 
  22. ^ Bug 36724 – Add support for ol reversed, WebKit 
  23. ^ Bug 21288 – Implement HTML5's sandbox attribute for iframes, WebKit 
  24. ^ Bug 45950 – Implement HTML5's seamless attribute for iframes, WebKit 
  25. ^ Bug 41146 – Implement the .dataset DOM property, WebKit 
  26. ^ Bug 40511 – Implement HTML5 hidden attribute, WebKit 
  27. ^ Bug 25537 – WebKit does not follow HTML5 spellcheck attribute logic for words split by spans, WebKit 
  28. ^ Bug 26262 – Implement HTML5 draggable, WebKit 
  29. ^ Bug 19264 – HTML5 Forms Implementation – Master bug, WebKit 
  30. ^ Bug 27247 – [HTML5][Forms] Part 5 of datalist&list: UI of `list' attribute of <input>, WebKit 
  31. ^ a b Bug 59019 – Enable the interactive form validation feature by default, WebKit 
  32. ^ Almaer, Dion (6 March 2009), input type="file" multiple; now in a real browser!, Ajaxian 
  33. ^ Bug 25552 – Support for HTML5 Forms "pattern" attribute, WebKit 
  34. ^ Bug 27450 – Support HTML5 min/max attributes and associated CSS selectors, WebKit 
  35. ^ Bug 27451 – Support HTML5 step attribute, WebKit 
  36. ^ Bug 47813 – [HTML5] "form" attribute support for form control elements, WebKit 
  37. ^ Bug 18887 – WF2 Support for autofocus controls, WebKit 
  38. ^ Bug 29292 – [HTML5][Forms] Support for <textarea maxlength=N>, WebKit 
  39. ^ a b Bug 28145 – novalidate/formnovalidate support, WebKit 
  40. ^ Bug 45079 – HTML <input type="file"> accept attribute, WebKit 
  41. ^ a b c d Bug 49240 – Implement formaction, formenctype, formmethod and formtarget attributes for the input tag, WebKit 
  42. ^ Bug 27247 – Master bug of datalist element and list attribute implementation, WebKit 
  43. ^ Bug 29363 – [HTML5][Forms] Support for <output> element, WebKit 
  44. ^ Bug 37307 – [Chromium] Support for <progress> element, WebKit 
  45. ^ Bug 37074 – Support for HTMLMeterElement, WebKit 
  46. ^ Hyatt, David (July 2004), The Search Field, archived from the original on 26 January 2010 
  47. ^ a b c d Bug 25554 – Implement HTML5 Input element types for Text Fields, WebKit 
  48. ^ Bug 29004 – [HTML5][Forms] simple implementation of date&time types of INPUT element, WebKit 
  49. ^ Bug 29359 – Add UIs for date and time types of <input> 
  50. ^ Bug 28966 – [HTML5][Forms] <input type=color> simple implementation, WebKit 
  51. ^ Bug 44740 – registerProtocolHandler and registerContentHandler, WebKit 
  52. ^ Bug 32052 – Implement HTML5 state object history API, WebKit 
  53. ^ Bug 68609 – Implement HTML5 Microdata (master bug) 
  54. ^ Bug 39259 – MASTER: WebKit needs an HTML5 Tokenizer 
  55. ^ Chapin, Nate (19 November 2009), WebKit nightlies support HTML5 noreferrer link relation, retrieved 2009-11-20 
  56. ^ Bug 21605 – Support for HTML5 "hashchange" event, WebKit 
  57. ^ Bug 20709 – Implement HTML 5's HTMLElement.classList property, WebKit 
  58. ^ Bug 50916 – Add support for dir=auto, WebKit 
  59. ^ Bug 30458 – Implement <a ping>, WebKit 
  60. ^ Bug 103172 – implement the HTML <main> element, WebKit 
  61. ^ Bug 113016 – HTMLStackItem should include <template> as a special tag, WebKit 
  62. ^ Smith, David (7 February 2008), querySelector and querySelectorAll 
  63. ^ Eidson, Brady (19 October 2007), WebKit Does HTML5 Client-side Database Storage, retrieved 2009-10-22 
  64. ^ Bug 36567 – Implement FileAPI/FileWriter, WebKit 
  65. ^ Bug 38157 – Implement FileReader class, WebKit 
  66. ^ Bug 44358 – Implement FileWriter, WebKit 
  67. ^ Bug 42903 – Implement FileAPI: Directories and System (a.k.a. FileSystem API), WebKit 
  68. ^ Bug 14997 – Support for server-sent DOM events, WebKit 
  69. ^ Bug 21475 – Provide support for the Geolocation API, WebKit 
  70. ^ Pfeiffer, Silvia (2009-12-13), [whatwg] Quality Values for Media Source Elements 
  71. ^ April 2012 HTML5 Media Element & WebAudio – WebKit 
  72. ^ Bug 24364 - Add HTMLMediaElement canPlayType method, WebKit 
  73. ^ Koivisto, Antti (2007-11-12), HTML5 Media Support, WebKit 
  74. ^ Look for "GOOGLE_CHROME_BUILD" 
  75. ^ DiBona, Chris (2009-06-01), [whatwg] Google's use of FFmpeg in Chromium and Chrome Was: Re: MPEG-1 subset proposal for HTML5 video codec, Google 
  76. ^ Origyn Web Browser for MorphOS, Fabian Coeurjoly, retrieved 2010-01-04 
  77. ^ Holwerda, Thom (2010-03-08), Origyn Web Browser 1.7 Supports HTML5 Media, More, OSNews, retrieved 2010-03-08 
  78. ^ HTML Video Codec Support in Chrome, retrieved 2010-01-22 
  79. ^ Bankoski, Jim (2010-05-19), WebM and VP8 land in Chromium, Google 
  80. ^ WebKit DOM Programming Topics: Using the Canvas 
  81. ^ Marrin, Chris (2009-10-19), WebGL Now Available in WebKit Nightlies, Surfin' Safari 
  82. ^ WebKit DOM reference - CanvasRenderingContext2D 
Presto
  1. ^ A call for video on the web – Opera <video> release on Labs, Opera 
  2. ^ a b Opera Core Concerns – (re-)Introducing <video>, Opera, archived from the original on 2010-01-04 
  3. ^ Web specifications supported in Opera 9.5, Opera 
  4. ^ canvas Support in Opera, Opera 
  5. ^ Chavchanidze, George (12 June 2008), Opera 9.5 released, Opera, archived from the original on 13 October 2008 
  6. ^ Implemented full support for the part of the HTML5 specification entitled "Parsing HTML documents"., Opera 
  7. ^ HTML5 elements, attributes, and APIs support in Opera Presto 2.8, Opera 
  8. ^ a b c d Haavard (14 June 2010), HTML5, and then some, Opera, archived from the original on 17 June 2010 
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