WCAG 2.2 support table
HTML Techniques
The validator supports rules which can be validated without understanding the
textual description of the content. E.g. it cannot suggest to use <abbr> or
<dl> where appropriate or similar when to use the lang or dir attributes.
| Technique | Description | Support |
|---|---|---|
| H2 | Combining adjacent image and text links for the same resource | No |
| H4 | Creating a logical tab order through links, form controls, and objects | No |
| H24 |
Providing text alternatives for the area elements of image maps.
Use area-alt to validate. Only checks for presence of text.
|
Yes |
| H25 | Providing a title using the title element | Yes |
| H28 | Providing definitions for abbreviations by using the abbr element | No |
| H30 |
Providing link text that describes the purpose of a link for anchor elements.
Use wcag/h30 to validate. Only checks for presence of text.
|
Yes |
| H32 |
Providing submit buttons.
Use wcag/h32 to validate.
|
Yes |
| H33 | Supplementing link text with the title attribute | No |
| H34 | Using a Unicode right-to-left mark (RLM) or left-to-right mark (LRM) to mix text direction inline | No |
| H35 | Providing text alternatives on applet elements | Planned |
| H36 |
Using alt attributes on images used as submit buttons.
Use wcag/h36 to validate. Only checks for presence of text.
|
Yes |
| H37 |
Using alt attributes on img elements.
Use wcag/h37 to validate. Only checks for presence of text or explicit
alt="" for decorative images.
|
Yes |
| H39 | Using caption elements to associate data table captions with data tables | Planned |
| H40 | Using description lists | No |
| H42 | Using h1-h6 to identify headings | No |
| H43 | Using id and headers attributes to associate data cells with header cells in data tables | No |
| H44 |
Using label elements to associate text labels with form controls.
Use input-missing-label to validate. Rule is only enabled by default in
document mode (html-validate:document).
|
Yes |
| H45 | Using longdesc | No |
| H46 | Using noembed with embed | Planned |
| H48 | Using ol, ul and dl for lists or groups of links | No |
| H49 | Using semantic markup to mark emphasized or special text | No |
| H51 | Using table markup to present tabular information | No |
| H53 | Using the body of the object element | Planned |
| H54 | Using the dfn element to identify the defining instance of a word | No |
| H56 | Using the dir attribute on an inline element to resolve problems with nested directional runs | No |
| H57 |
Using language attributes on the html element.
Use element-required-attributes to validate. lang is a required
attribute on <html> elements.
|
Yes |
| H58 | Using language attributes to identify changes in the human language | No |
| H59 | Using the link element and navigation tools | No |
| H60 | Using the link element to link to a glossary | No |
| H62 | Using the ruby element | No |
| H63 |
Using the scope attribute to associate header cells and data cells in data tables.
Use wcag/h63 to validate.
|
Yes |
| H64 |
Using the title attribute of the frame and iframe elements.
Use element-required-attributes to validate. title is a required
attribute on <frame> and <iframe> elements.
|
Yes |
| H65 | Using the title attribute to identify form controls when the label element cannot be used | Planned |
| H67 |
Using null alt text and no title attribute on img elements for images that AT should ignore.
Use wcag/h67 to validate.
|
Yes |
| H69 | Providing heading elements at the beginning of each section of content | Planned |
| H70 | Using frame elements to group blocks of repeated material | No |
| H71 |
Providing a description for groups of form controls using fieldset and legend elements.
Use wcag/h71 to validate presence of <legend> inside
<fieldset> but it will not validate if
<fieldset> itself is used.
|
Yes |
| H73 | Using the summary attribute of the table element to give an overview of data tables | Planned |
| H74 |
Ensuring that opening and closing tags are used according to specification.
Use close-order and void-content to validate.
|
Yes |
| H75 | Ensuring that Web pages are well-formed. Non-well-formed pages will cause parser errors which cannot be ignored. | Yes |
| H76 |
Using meta refresh to create an instant client-side redirect.
Use meta-refresh to validate.
|
Yes |
| H77 | Identifying the purpose of a link using link text combined with its enclosing list item | No |
| H78 | Identifying the purpose of a link using link text combined with its enclosing paragraph | No |
| H79 | Identifying the purpose of a link in a data table using the link text combined with its enclosing table cell and associated table header cells | No |
| H80 | Identifying the purpose of a link using link text combined with the preceding heading element | No |
| H81 | Identifying the purpose of a link in a nested list using link text combined with the parent list item under which the list is nested | No |
| H83 | Using the target attribute to open a new window on user request and indicating this in link text | No |
| H84 | Using a button with a select element to perform an action | No |
| H85 | Using OPTGROUP to group OPTION elements inside a SELECT | No |
| H86 | Providing text alternatives for ASCII art, emoticons, and leetspeak | Partial planned |
| H88 | Using HTML according to spec. Use the content model rules to validate. | Yes |
| H89 | Using the title attribute to provide context-sensitive help | No |
| H90 | Indicating required form controls using label or legend | Planned |
| H91 | Using HTML form controls and links | Planned |
| H93 |
Ensuring that id attributes are unique on a Web page.
Use no-dup-id to validate, preferably in document mode.
|
Yes |
| H94 |
Ensuring that elements do not contain duplicate attributes.
Use no-dup-attr to validate.
|
Yes |
| H95 | Using the track element to provide captions | Planned |
| H96 | Using the track element to provide audio descriptions | Planned |
| H97 | Grouping related links using the nav element | No |
| H98 | Using HTML 5.2 autocomplete attributes | Planned |