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Accessibility checking

Rocket Validator looks for accesibility violations on your pages using the axe-core accessibility engine, hosted on our own servers and integrated into our web crawler. You don't need to buy an additional license, everything's already included in your Pro account at Rocket Validator.

List of accessibility rules checked

These are the rules that will be checked on every page of your sites. Click on each to get an extended description.

wcag2a   wcag211   cat.keyboard   accesskey attribute value must be unique
cat.text-alternatives   wcag2a   wcag111   section508   section508.22.a   Active <area> elements must have alternate text
cat.tables   wcag2a   wcag131   section508   section508.22.g   All cells in a table element that use the headers attribute must only refer to other cells of that same table
cat.keyboard   best-practice   All page content must be contained by landmarks
cat.aria   wcag2a   wcag411   ARIA attributes must conform to valid names
cat.aria   wcag2a   wcag131   wcag411   wcag412   ARIA attributes must conform to valid values
cat.aria   best-practice   ARIA role must be appropriate for the element
cat.aria   wcag2a   wcag131   wcag411   wcag412   ARIA roles used must conform to valid values
wcag2a   wcag122   section508   section508a   <audio> elements must have a captions track
cat.forms   wcag21aa   wcag135   autocomplete attribute must be used correctly
cat.semantics   best-practice   Banner landmark must be at top level
cat.semantics   best-practice   Banner landmark must not be contained in another landmark
cat.name-role-value   wcag2a   wcag412   section508   section508.22.a   Buttons must have discernible text
cat.aria   wcag2a   wcag131   Certain ARIA roles must be contained by particular parents
cat.aria   wcag2a   wcag131   Certain ARIA roles must contain particular children
cat.forms   best-practice   Checkbox inputs with the same name attribute value must be part of a group
cat.semantics   best-practice   Contentinfo landmark must be at top level
cat.keyboard   best-practice   Content should be contained in a landmark region
wcag2a   wcag131   Data tables should be marked up properly
cat.structure   wcag2a   wcag131   <dl> elements must only directly contain properly-ordered <dt> and <dd> groups, <script> or <template> elements
cat.semantics   best-practice   Document contain at most one banner landmark
cat.semantics   best-practice   Document contain at most one contentinfo landmark
cat.text-alternatives   wcag2a   wcag242   Documents must have <title> element to aid in navigation
cat.structure   wcag2a   wcag131   <dt> and <dd> elements must be contained by a <dl>
cat.color   wcag2aa   wcag143   Elements must have sufficient color contrast
cat.aria   wcag2a   wcag411   wcag412   Elements must only use allowed ARIA attributes
best-practice   Elements should not have tabindex greater than zero
cat.forms   wcag2a   wcag332   wcag131   section508   section508.22.n   Form elements must have labels
cat.forms   best-practice   Form elements should have a visible label
cat.text-alternatives   best-practice   Frames must have a unique title attribute
cat.text-alternatives   wcag2a   wcag241   section508   section508.22.i   Frames must have title attribute
wcag2a   wcag241   Frames must have unique title attribute
cat.semantics   best-practice   Heading levels should only increase by one
cat.name-role-value   best-practice   Headings must not be empty
cat.language   wcag2a   wcag311   <html> element must have a lang attribute
wcag2a   wcag311   <html> element must have a valid lang attribute
cat.parsing   wcag2a   wcag411   id attribute value must be unique
cat.parsing   wcag2a   wcag411   IDs of active elements must be unique
cat.parsing   wcag2a   wcag411   IDs used in ARIA and labels must be unique
cat.text-alternatives   wcag2a   wcag111   section508   section508.22.a   Image buttons must have alternate text
cat.text-alternatives   wcag2a   wcag111   section508   section508.22.a   Images must have alternate text
cat.language   wcag2aa   wcag312   lang attribute must have a valid value
cat.semantics   wcag2a   wcag131   Layout tables must not use data table elements
cat.structure   wcag2a   wcag131   <li> elements must be contained in a <ul> or <ol>
cat.name-role-value   wcag2a   wcag111   wcag412   wcag244   section508   section508.22.a   Links must have discernible text
cat.semantics   best-practice   Main landmark is not at top level
cat.semantics   best-practice   Main landmark must not be contained in another landmark
cat.text-alternatives   wcag2a   wcag111   section508   section508.22.a   <object> elements must have alternate text
cat.semantics   best-practice   Page must contain a level-one heading
cat.semantics   best-practice   Page must contain one main landmark
cat.keyboard   wcag2a   wcag241   section508   section508.22.o   Page must have means to bypass repeated blocks
cat.semantics   best-practice   Page must have one main landmark
cat.semantics   best-practice   Page must not have more than one banner landmark
cat.semantics   best-practice   Page must not have more than one contentinfo landmark
cat.forms   best-practice   Radio inputs with the same name attribute value must be part of a group
wcag2a   wcag411   Required ARIA attributes must be provided
cat.tables   best-practice   scope attribute should be used correctly
cat.text-alternatives   best-practice   Text of buttons and links should not be repeated in the image alternative
cat.tables   best-practice   The <caption> element should not contain the same text as the summary attribute
cat.keyboard   best-practice   The skip-link target should exist and be focusable
cat.time   wcag2a   wcag2aaa   wcag221   wcag224   wcag325   Timed refresh must not exist
cat.structure   wcag2a   wcag131   <ul> and <ol> must only directly contain <li>, <script> or <template> elements
cat.sensory-and-visual-cues   best-practice   Users should be able to zoom and scale the text up to 500%
wcag2aa   wcag125   section508   section508a   <video> elements must have an audio description track
wcag2a   wcag122   wcag123   section508   section508a   <video> elements must have captions
cat.sensory-and-visual-cues   wcag2aa   wcag144   Zooming and scaling must not be disabled
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