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WAI: Strategies, guidelines, resources to make the Web accessible to people with disabilities

Ways of using HTML that are accessibility supported across additional platforms

The table below lists uses for a technology along with results for all of the operating system, browser and assistive technology combinations chosen on the previous page. Each cell contains an icon representing whether test results indicate that the use is supported (+), not supported, (-) or partially supported (/). Where cells contain a single icon indicating the result, all testers reached the same conclusion about the support for that use. If different testers reported different results, multiple icons will appear in that cell indicating which results were reported and additional investigation will be carried out to determine if there is a test error or to document the conditions which led to different results. Empty cells indicate that no test data for the use have been gathered.

Technology: HTML

A used to identify links Supported Supported Supported Supported 
ADDRESS used to identify author information  Supported Not Supported 
alt and the body of APPLET used as a text alternativeSupported Not Supported Not Supported Not Supported 
alt on APPLET used as a text alternativeNot Supported Not Supported Not Supported Not Supported 
alt on AREA used as a text alternativeSupported  Not Supported Partially Supported 
alt on IMG used as a text alternative Supported Supported Supported Supported 
alt on INPUT button used as a text alternativeSupported Supported Supported Supported 
alt set to null on IMG used when combined with adjacent links to the same resource  Supported Supported 
alt set to null used to indicate that non-text content should be ignoredSupported  Supported  
axis used to categorize table cells   Not Supported 
BLOCKQUOTE used to identify quotationsSupported   Not Supported 
body of A used to describe the purpose of a linkSupported   Supported 
body of APPLET used as a text alternativeSupported    
BUTTON type='submit' used to initiate an actionSupported  Supported Supported 
BUTTON used to identify a buttonSupported   Supported 
CAPTION used to associate table captions with data tablesSupported  Partially Supported Partially Supported 
CITE used to identify a citation or reference to other sources  Supported Not Supported 
CODE used to designate a fragment of computer code  Partially Supported  
COL used to group together attribute specifications for table columns    
colspan on TD used to span columns in a cellSupported  Supported Supported 
colspan on TH used to span columns in a cell  Supported Supported 
DEL used to identify deleted text  Partially Supported Not Supported 
DFN used to identify the defining instance of a word  Partially Supported  
dir used on inline elements to resolve problems with nested directional runs    
DL used to indicate a definition list  Supported Partially Supported 
EM used to indicate emphasisNot Supported  Partially Supported Not Supported 
FIELDSET and LEGEND used to describe groups of form controlsPartially Supported  Supported  
FRAME used to group content  Supported  
H1-H6 used to identify headings  Supported  
http-equiv on META used to create an instant client-side redirectSupported  Supported  
id and headers on TD used to associate data cells with header cells  Supported  
Indicating required groups of radio buttons or check boxesNot Supported  Supported  
Indicating required input controls in the labelSupported  Partially Supported  
Indicating required input controls using an asteriskPartially Supported  Supported  
INPUT type=submit used to initiate an actionSupported  Supported  
INS used to indicate inserted textNot Supported  Partially Supported  
KBD used to indicate text to be entered by the user  Partially Supported  
label on OPTION and OPTGROUP used to provide abbreviated labelsPartially Supported  Supported  
LABEL used to associate text labels with form controls  Supported  
lang on HTML used to identify the human language of a Web pagePartially Supported    
lang used to identify changes in language  Partially Supported  
link text and enclosing LI used to identify the purpose of a linkSupported  Supported  
link text and enclosing P used to identify the purpose of a linkSupported  Supported  
link text and enclosing TD and associated table headings used to identify the purpose of a linkSupported  Supported  
link text and preceding heading element used to identify the purpose of a linkSupported  Supported  
link text in a nested list combined with parent list item to identify the purpose of a linkSupported  Supported  
LINK used to describe relationship of a Web page to a set of Web pagesNot Supported  Supported  
LINK used to provide a link to a glossaryNot Supported  Supported  
longdesc on FRAME used to describe the contents of a FRAME    
longdesc on IFRAME used to describe the contents of an IFRAME  Not Supported  
longdesc on IMG used to provide a text alternativeSupported  Supported  
MAP used to group linksSupported    
NOEMBED with EMBED used to provide an alternative for embedded content Not Supported  Not Supported  
OL used to group linksSupported  Not Supported  
OL used to indicate an ordered listSupported  Supported  
OPTGROUP and OPTION with SELECT used to indicate groups of related optionsPartially Supported  Partially Supported  
Q used to identify a short quotationNot Supported  Not Supported  
RUBY used to provide information about the pronunciation and meaning of textSupported  Supported  
S used to indicate strike-through textNot Supported  Partially Supported  
scope on TD used to associate data cells with header cellsSupported  Supported  
selected on OPTION used to indicate which option is selectedSupported  Supported  
start on OL used to indicate a starting number in an ordered listSupported  Supported  
STRONG used to indicate strong emphasis  Partially Supported  
SUB used to indicate subscriptNot Supported  Partially Supported  
summary used provide an overview of data tablesSupported  Supported  
SUP used to indicate superscriptNot Supported  Partially Supported  
tabindex used to control focus order Partially Supported  Supported  
tabindex=-1 used to remove items from the tab order  Supported  
TABLE used to present tabular informationSupported  Supported  
target=_blank on A used to open a new windowSupported  Supported  
TBODY used to identify the body of a tableSupported  Supported  
TD used to identify a table cellSupported  Supported  
TFOOT used to identify a table footer    
TH used to identify a table header cellSupported  Supported  
THEAD used to identify a table headerSupported  Supported  
title and ABBR used as a text alternative for ASCII art, emoticons, and leetspeakNot Supported  Not Supported  
title and ABBR used to provide an expansion for an abbreviationNot Supported  Supported  
title and ACRONYM used to provide an expansion for an acronym  Supported  
title on DIV used to identify a sectionNot Supported  Not Supported  
title on FRAME used to identify a frameSupported  Supported  
title on IFRAME used to identify an iframe  Supported  
title on INPUT used to identify form controls Supported  Supported  
title on SPAN used to provide explanations of words or phrasesNot Supported  Not Supported  
TITLE used to provide a page titleNot Supported  Supported  
title used to provide name for buttonSupported  Supported  
title used to provide name for Select elementSupported  Supported  
title used to supplement link textPartially Supported  Not Supported  
TR used to identify a table rowSupported  Supported  
TT used for teletype or monospaced text  Partially Supported  
type on LI used to indicate list item stylePartially Supported  Supported  
type on OL used to indicate numbering stylePartially Supported  Partially Supported  
type on UL used to indicate bullet styleSupported  Partially Supported  
UL used to group linksSupported  Not Supported  
UL used to indicate an unordered listSupported  Supported  
Unicode right-to-left and left-to-right marks used to mix text direction inline    
Using title to provide context-sensitive helpNot Supported  Not Supported  
value on LI used to reset sequence numberSupported  Not Supported