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Web Performance & Accessibility

11/10/2026
Diagnose slow or difficult-to-use websites and improve performance, accessibility and reliability.

How to Check Whether a Website Timeout Gives Users a Useful Recovery Path

A timeout page that simply reports failure can leave users unsure whether a form or payment was submitted. People may retry and create duplicate requests, especially when the system does not preserve entered information. What to check Test slow network and server responses across key actions. Check whether the user can tell which step completed,...

How to Make Website Session Expiry Clear Before Users Lose Their Work

A session can expire while someone is filling a long form, creating an inaccessible surprise or losing work. Silent expiry can also cause an apparent save error when the system rejects the final submission. What to investigate Test realistic completion times and idle behavior, check whether users receive an advance warning, and confirm what happens to...

How to Make Website Loading Progress Clear to Screen Reader Users

A page can show a visual spinner while assistive technology users receive no indication that a long operation is still running. Without status feedback, people may repeat an action or assume the site has stopped. What to check Test loading states with keyboard and screen reader, check accessible status messaging, focus behavior, timing, and whether...

How to Make Website Links Understandable Outside Their Surrounding Paragraph

Link text such as “click here” or “read more” can be unclear when encountered in a screen reader’s links list or copied out of context. Users need to understand where a link leads before activating it. What to check Review repeated link labels, navigation lists, keyboard focus, and screen reader output. Check whether each link describes its destination...

How to Check Website Form Error Messages at Different Zoom Levels

Form errors may be visible at normal zoom but overlap fields, disappear off-screen, or lose their association when users enlarge text. People who magnify content need to locate the affected field and understand how to fix it. What to check Test validation at high zoom and narrow viewport widths. Check whether messages wrap, remain next to the relevant...

How to Check Whether Website Navigation Works Without a Mouse

A website may look navigable but rely on hover, pointer gestures, or custom controls that keyboard users cannot reach. Missing focus indicators can make it unclear where a user is on the page. What to check Navigate the complete site with keyboard only. Check focus order, visible focus, menus, dialogs, skip links, interactive controls, and whether...

How to Make Website Search Results Usable With Keyboard Navigation

Search suggestions and result filters may work with a pointer but be unreachable or unclear to keyboard users. Dynamic result updates can also move focus or remain unannounced. What to check Test suggestions, filters, sorting, pagination, and result counts using keyboard only and a screen reader. Check focus order, labels, selected states, and whether...

How to Make Website Cookie Notices Work With Keyboard and Screen Readers

A cookie banner can obscure content or trap focus if its buttons and settings are not accessible. Visitors should be able to understand choices and use the site without relying on a pointer. What to check Test focus order, labels, contrast, screen reader announcements, settings dialog behavior, and whether the banner returns after preference changes....

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