Related aXe Rules

69 of 100 of aXe rules have a related OpenA11y Rule.

Landmarks

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Landmark 1	main landmark: at least one	Ensure the document has a main landmark (Moderate) Ensure the document has at most one main landmark (Moderate)
Landmark 2	All content must be contained in landmarks	Ensure all page content is contained by landmarks (Moderate)
Landmark 4	banner landmark: identifies branding content	Ensure the document has at most one banner landmark (Moderate)
Landmark 5	banner landmark: no more than one	Ensure the document has at most one banner landmark (Moderate)
Landmark 6	contentinfo landmark: identifies admin content	Ensure the document has at most one contentinfo landmark (Moderate)
Landmark 7	contentinfo landmark: no more than one	Ensure the document has at most one contentinfo landmark (Moderate)
Landmark 8	banner landmark: must be top-level	Ensure the banner landmark is at top level (Moderate)
Landmark 11	main landmark: must be top-level	Ensure the main landmark is at top level (Moderate)
Landmark 12	contentinfo landmark: must be top-level	Ensure the contentinfo landmark is at top level (Moderate)
Landmark 17	Landmarks must be uniquely identifiable	Ensure landmarks are unique (Moderate)
Landmark 19	complementary landmark: must be top level	Ensure the complementary landmark or aside is at top level (Moderate)

Headings

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Heading 1	Page should have h1 element	Ensure that the page, or at least one of its frames contains a level-one heading (Moderate)
Heading 5	Headings must be properly nested	Ensure the order of headings is semantically correct (Moderate)

Color/Content

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Color 1	Color contrast of text: Minimum	Ensure the contrast between foreground and background colors meets WCAG 2 AA minimum contrast ratio thresholds (Serious)
Color 3	Color contrast of text: Enhanced	Ensure the contrast between foreground and background colors meets WCAG 2 AAA enhanced contrast ratio thresholds (Serious)
Frame 1	frame must have accessible name	Ensure <iframe> and <frame> elements have an accessible name (Serious)
Frame 2	iframe must have accessible name	Ensure <iframe> and <frame> elements have an accessible name (Serious)
HTML 1	Replace marquee and blink elements	Ensure <marquee> elements are not used (Serious) Ensure <blink> elements are not used (Serious)
Language 1	Page must use language code	Ensure every HTML document has a lang attribute (Serious) Ensure the lang attribute of the <html> element has a valid value (Serious) Ensure that HTML elements with both valid lang and xml:lang attributes agree on the base language of the page (Moderate) Ensure lang attributes have valid values (Serious)
List 1	Use semantic markup for lists	Ensure that lists are structured correctly (Serious) Ensure <li> elements are used semantically (Serious)

Images

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Image 1	Images must have alt text	Ensure <img> elements have alternative text or a role of none or presentation (Critical) Ensure <area> elements of image maps have alternative text (Critical) Ensure [role="img"] elements have alternative text (Serious) Ensure <svg> elements with an img, graphics-document or graphics-symbol role have accessible text (Serious) Ensure <object> elements have alternative text (Serious)

Links

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Link 1	Link text must describe the link target	Ensure links have discernible text (Serious) Ensure every ARIA button, link and menuitem has an accessible name (Serious)
Link 2	Link text should be unique	Ensure that links with the same accessible name serve a similar purpose (Minor)
Target Size 1	Author sizing of links (Minimum)	Ensure touch targets have sufficient size and space (Serious)
Target Size 2	Author sizing of links (Enhanced)	Ensure touch targets have sufficient size and space (Serious)

Tables/Layout

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Table 1	Data cells must have row/column headers	Ensure that each cell in a table that uses the headers attribute refers only to other <th> elements in that table (Serious)

Forms

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Control 1	Form controls must have labels	Ensure every form element has a label (Critical) Ensure select element has an accessible name (Critical)
Control 2	Image button must have alt. content	Ensure <input type="image"> elements have alternative text (Critical)
Control 4	buttons should have text content	Ensure buttons have discernible text (Critical) Ensure summary elements have discernible text (Serious)
Control 5	id must be unique	Ensure every id attribute value used in ARIA and in labels is unique (Critical)
Control 6	label must reference control	Ensure form field does not have multiple label elements (Moderate)
Control 10	Accessible name must be unique	Ensure input buttons have discernible text (Critical)
Target Size 3	Button target size (Minimum)	Ensure touch targets have sufficient size and space (Serious)
Target Size 4	Button target size (Enhanced)	Ensure touch targets have sufficient size and space (Serious)

ARIA Widgets

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Widget 1	Accessible name is required	Ensure every ARIA button, link and menuitem has an accessible name (Serious) Ensure every ARIA dialog and alertdialog node has an accessible name (Serious) Ensure every ARIA input field has an accessible name (Serious) Ensure every ARIA meter node has an accessible name (Serious) Ensure every ARIA progressbar node has an accessible name (Serious) Ensure every ARIA treeitem node has an accessible name (Serious) Ensure every ARIA toggle field has an accessible name (Serious) Ensure every ARIA tooltip node has an accessible name (Serious)
Widget 3	role must be valid	Ensure elements do not use deprecated roles (Minor) Ensure all elements with a role attribute use a valid value (Critical) Ensure role attribute has an appropriate value for the element (Minor)
Widget 4	Values must be valid	Ensure ARIA attributes are used as described in the specification of the element's role (Serious) Ensure all ARIA attributes have valid values (Critical)
Widget 5	Attributes that start with aria- must be defined.	Ensure attributes that begin with aria- are valid ARIA attributes (Critical)
Widget 6	Widgets must set properties	Ensure ARIA attributes are used as described in the specification of the element's role (Serious) Ensure elements with ARIA roles have all required ARIA attributes (Critical)
Widget 7	Widgets must have owned elements	Ensure elements with an ARIA role that require child roles contain them (Critical)
Widget 8	Role must have parent	Ensure elements with an ARIA role that require parent roles are contained by them (Critical)
Widget 12	Accessible name is descriptive	Ensure ARIA attributes are used as described in the specification of the element's role (Serious)
Widget 14	Unsupported and deprecated ARIA attributes.	Ensure an element's role supports its ARIA attributes (Critical) Ensure ARIA attributes are used as described in the specification of the element's role (Serious) Ensure ARIA attributes are not prohibited for an element's role (Serious) Ensure elements do not use deprecated roles (Minor)
Widget 17	aria-braillelabel is more usable	Ensure aria-braillelabel and aria-brailleroledescription have a non-braille equivalent (Serious)
Widget 18	aria-brailleroledescription abbreviated role description.	Ensure aria-braillelabel and aria-brailleroledescription have a non-braille equivalent (Serious)

Audio/Video

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Audio 2	Audio Control	Ensure <video> or <audio> elements do not autoplay audio for more than 3 seconds without a control mechanism to stop or mute the audio (Moderate)
Video 2	Captions (Prerecorded)	Ensure <video> elements have captions (Critical)
Video 4	Captions (Live)	Ensure <video> elements have captions (Critical)

Keyboard Support

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Bypass 1	Skip to main content link	Ensure all skip links have a focusable target (Moderate) Ensure each page has at least one mechanism for a user to bypass navigation and jump straight to the content (Serious)
Keyboard 4	Do not set tabindex > 0	Ensure tabindex attribute values are not greater than 0 (Serious)
Keyboard 10	tabindex=0 on non-interactive elments	Ensure elements marked as presentational do not have global ARIA or tabindex so that all screen readers ignore them (Minor)
Shortcut 2	Avoid using accesskey for shortcuts	Ensure every accesskey attribute value is unique (Serious)

Timing/Live Regions

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Timing 4	Automatic refresh	Ensure <meta http-equiv="refresh"> is not used for delayed refresh (Critical)

Site Navigation

Rule ID	OpenA11y Rule Summary	Related aXe Rules
Title 1	title must identify website and page	Ensure each HTML document contains a non-empty <title> element (Serious)

31 aXe Rules without a related OpenA11y Rule

aXe Reference	Description	Type	Impact
aria-hidden-body	Ensure aria-hidden="true" is not present on the document body.	Required	Critical
aria-hidden-focus	Ensure aria-hidden elements are not focusable nor contain focusable elements	Required	Serious
definition-list	Ensure <dl> elements are structured correctly	Required	Serious
dlitem	Ensure <dt> and <dd> elements are contained by a <dl>	Required	Serious
frame-focusable-content	Ensure <frame> and <iframe> elements with focusable content do not have tabindex=-1	Required	Serious
frame-title-unique	Ensure <iframe> and <frame> elements contain a unique title attribute	Required	Serious
link-in-text-block	Ensure links are distinguished from surrounding text in a way that does not rely on color	Required	Serious
meta-viewport	Ensure <meta name="viewport"> does not disable text scaling and zooming	Required	Moderate
nested-interactive	Ensure interactive controls are not nested as they are not always announced by screen readers or can cause focus problems for assistive technologies	Required	Serious
scrollable-region-focusable	Ensure elements that have scrollable content are accessible by keyboard	Required	Serious
server-side-image-map	Ensure that server-side image maps are not used	Required	Minor
th-has-data-cells	Ensure that <th> elements and elements with role=columnheader/rowheader have data cells they describe	Required	Serious
autocomplete-valid	Ensure the autocomplete attribute is correct and suitable for the form field	Required	Serious
avoid-inline-spacing	Ensure that text spacing set through style attributes can be adjusted with custom stylesheets	Required	Serious
aria-text	Ensure role="text" is used on elements with no focusable descendants	Best Practices	Serious
empty-heading	Ensure headings have discernible text	Best Practices	Minor
empty-table-header	Ensure table headers have discernible text	Best Practices	Minor
frame-tested	Ensure <iframe> and <frame> elements contain the axe-core script	Best Practices	Critical
image-redundant-alt	Ensure image alternative is not repeated as text	Best Practices	Minor
label-title-only	Ensure that every form element has a visible label and is not solely labeled using hidden labels, or the title or aria-describedby attributes	Best Practices	Serious
meta-viewport-large	Ensure <meta name="viewport"> can scale a significant amount	Best Practices	Minor
scope-attr-valid	Ensure the scope attribute is used correctly on tables	Best Practices	Moderate
table-duplicate-name	Ensure the <caption> element does not contain the same text as the summary attribute	Best Practices	Minor
meta-refresh-no-exceptions	Ensure <meta http-equiv="refresh"> is not used for delayed refresh	Best Practices	Minor
css-orientation-lock	Ensure content is not locked to any specific display orientation, and the content is operable in all display orientations	Experimental	Serious
focus-order-semantics	Ensure elements in the focus order have a role appropriate for interactive content	Experimental	Minor
hidden-content	Inform users about hidden content.	Experimental	Minor
label-content-name-mismatch	Ensure that elements labelled through their content must have their visible text as part of their accessible name	Experimental	Serious
p-as-heading	Ensure bold, italic text and font-size is not used to style <p> elements as a heading	Experimental	Serious
table-fake-caption	Ensure that tables with a caption use the <caption> element.	Experimental	Serious
td-has-header	Ensure that each non-empty data cell in a <table> larger than 3 by 3 has one or more table headers	Experimental	Critical