Use this website accessibility audit checklist to spot common issues, prioritise fixes, and make your site easier for real people to use.
A site can look polished, load quickly, and still be a nightmare to use if somebody relies on a keyboard, a screen reader, captions, zoom, or just plain decent contrast. That is why a website accessibility audit checklist matters. It gives you a repeatable way to catch the stuff that slips through when teams only test with a mouse and their own eyeballs.
For front-end developers, accessibility audits are less about ticking a compliance box and more about finding where the interface quietly fights the user. Some issues are obvious. A button with no accessible name is basically mute to assistive tech. Others are sneakier, like focus getting trapped in a modal, or helper text disappearing when someone zooms to 200%. Good times.
A useful checklist should help you answer three questions. Can people perceive the content, can they operate the interface, and can they understand what is happening? If your checklist only asks whether images have alt text, it is not an audit. It is a warm-up.
It also needs to work in the real world. That means mixing automated checks with manual testing. Automated tools are great for spotting missing form labels, low contrast, or broken heading structure. They are not great at judging whether alt text is meaningful, whether link text makes sense out of context, or whether the reading order becomes chaos once CSS starts doing acrobatics.
Before checking individual elements, decide what you are auditing. Most sites do not need every single page reviewed in one go. Start with templates and high-impact user journeys such as the homepage, navigation, search, sign-up, checkout, contact forms, account areas, and blog article pages.
This matters because accessibility problems often repeat at the component level. If your card component uses vague link text everywhere, or your modal is inaccessible, that issue may affect dozens of pages. Auditing key journeys first gives you a better signal-to-effort ratio, which is a fancy way of saying you fix more by checking less.
Semantic HTML is still doing a lot of the heavy lifting. Use proper headings in a logical order, real buttons for actions, and real links for navigation. If a clickable div is pretending to be a button, it is not clever. It is just extra work for you and extra pain for users.
Landmarks also matter. Make sure you are using elements like header, nav, main, footer, and where appropriate, aside. These help screen reader users understand the page structure and jump around more efficiently.
Look for duplicated or missing page titles too. A browser tab called “Home” on every page is not exactly helpful.
Now put the mouse away. Seriously. Try moving through the page using only the keyboard. You should be able to reach all interactive elements, see where focus is, activate controls, and move in and out of menus, dialogs, and forms without getting stuck.
Check for a visible focus state. If the design team removed outlines because they looked ugly, congratulations, the interface is now playing hide and seek. Bring focus styles back and make them obvious.
Also test skip links. On content-heavy pages, users should be able to skip repeated navigation and go straight to the main content.
Forms are where good intentions go to die. Every input needs a properly associated label. Placeholder text is not a label. It vanishes, it has poor contrast, and it leaves users guessing once they start typing.
Error handling needs special attention. If a field fails validation, the error should be clear, specific, and announced properly to assistive tech. “Invalid input” is not enough. Tell people what went wrong and how to fix it.
Check input purpose where relevant, autocomplete support, grouping with fieldset and legend for related controls, and whether required fields are identified clearly. Then test the form with mistakes on purpose, because users will not politely follow the happy path.
Every meaningful image needs appropriate alt text. Decorative images should usually have empty alt attributes so they are ignored by screen readers. The trick is not to describe every pixel. Describe the purpose.
If you have charts, infographics, or other complex visuals, provide the equivalent information in text. For video, captions should be available. For audio-only content, offer a transcript. For video with important visual context not covered in the audio, consider whether audio description is needed.
Autoplaying media is worth checking too. If content starts making noise without warning, users are not going to thank you for the surprise DJ set.
Colour contrast is one of the easiest things to measure and one of the easiest things to get wrong, especially in soft, tasteful, low-contrast designs that look brilliant right up until somebody tries to read them.
Check text contrast, focus indicators, icons that convey meaning, error states, and text over images. Also make sure colour is not the only way information is communicated. If an error is shown only in red, some users will miss it. Add text, icons, or both.
Accessibility is not just for assistive tech users. Plenty of people increase text size, zoom the page, or browse on narrow screens. Test at 200% zoom and on small viewports. Content should still be readable and usable without horizontal scrolling for standard text content.
Watch for clipped labels, overlapping components, hidden controls, and fixed-height containers that turn real content into a hostage situation. If your layout only survives at one perfect viewport, it needs work.
You do not need to become a full-time screen reader expert to run a worthwhile audit, but you should test a few common flows with one. Listen to how page titles, headings, landmarks, links, buttons, and form fields are announced.
Pay attention to accessible names. A button that visually shows a search icon still needs an accessible label like “Search”. Icon-only controls are frequent offenders here.
Also check dynamic updates. If content changes after an action, such as validation messages appearing or results loading, users need to be informed in a way assistive tech can detect.
Custom UI components are often where accessibility gets weird. Accordions, tabs, menus, modals, comboboxes, carousels – all the fun stuff. These patterns need correct roles, states, keyboard support, and predictable behaviour.
A modal should move focus into itself when opened and return focus when closed. A disclosure button should expose whether content is expanded or collapsed. Tabs should announce their selected state. If a component looks fancy but behaves like a puzzle, it is not ready.
This is one area where using native HTML or well-tested component libraries can save a lot of grief. Not always, but often.
Run automated testing tools as part of the audit, and ideally in CI too. They are fast and good at catching repeatable issues. Just do not confuse a clean automated report with an accessible site.
Accessibility tooling can tell you that an input has no label. It cannot always tell you whether the label makes any sense, whether the tab order is logical, or whether the overall experience is understandable. Use tools to speed up the boring parts, then do manual testing for the bits that involve actual judgement.
Once you have findings, group them by severity and frequency. A missing alt attribute on one decorative image is not ideal, but a broken checkout flow that cannot be completed with a keyboard should jump to the top of the list.
It helps to sort issues into three buckets: blockers, serious friction, and quality improvements. Blockers stop users from completing tasks. Serious friction slows them down or confuses them. Quality improvements make the experience stronger but are less urgent.
This keeps accessibility work grounded in user impact instead of becoming a spreadsheet of equally scary-looking failures.
The best website accessibility audit checklist is the one your team actually uses before release, not the one somebody remembers after complaints come in. Build checks into design reviews, component QA, and pull request habits. If you wait until the end, you will find more issues and fixing them will be more expensive.
For front-end teams, this usually means defining accessible patterns early, documenting them, and reusing them consistently. One solid button, modal, form field, and navigation pattern will save you from fixing the same bug fifty times in slightly different wrappers.
Accessibility work is rarely about perfection in one heroic sprint. It is about reducing avoidable barriers, release after release, component after component. That may sound less glamorous, but it is how better websites actually get made – and how more people get to use them without having to fight your interface first.