Web Performance & Accessibility

Help text that appears only on hover can be unavailable to keyboard users, touch users, and people who magnify the page. Important instructions should not depend on a pointer being positioned over a small icon. What to check Test help controls with keyboard, touch, screen reader, and zoom. Check whether the text is discoverable, remains open long...

Example text inside an input can disappear as users type and is not a reliable substitute for a visible label. A field may become ambiguous when a form has several similar inputs or errors. What to check Test with screen readers, keyboard, zoom, and an autofill workflow. Check whether each control has a persistent label, whether example format is...

A page that updates search results, stock status, or form feedback without a reload may not announce the change to assistive technology users. Visual changes alone can leave people unsure whether their action succeeded. What to check Test dynamic updates with keyboard and screen reader, check status role and announcement timing, and verify focus does...

An error page can leave users stuck if it does not explain what happened or provide a usable route back. Screen reader users may not know that the page changed, and keyboard users may have lost focus. What to check Test common error pages with keyboard and screen reader, check page title and focus, identify whether the requested URL is preserved, and...

Autocomplete fields can speed up forms but may be unusable if suggestions cannot be reached by keyboard, announced by screen readers, or distinguished from typed text. Users may submit a value that was never selected. What to check Test keyboard navigation, screen reader announcements, focus behavior, suggestion selection, dismissal, and mobile touch....

Users may only learn password requirements after submitting a form, which creates unnecessary errors and can be difficult for assistive technology users to correct. Rules can also be hidden in placeholder text. What to check Review persistent instructions, field labels, focus and error behavior, password manager compatibility, and whether screen...

An error may be indicated only by a red border or color change, leaving some users unable to identify the problem. The field may also lack a clear text explanation or connection to the error summary. What to check Review validation states in grayscale, high contrast, keyboard use, and screen readers. Check error text, field labels, focus movement, and...

Recorded videos without captions exclude people who are deaf or hard of hearing and can be difficult to follow in noisy settings. Automatically generated captions may contain errors in names or technical terms. What to check Check caption availability, synchronization, speaker identification, punctuation, technical vocabulary, and whether captions can...