Accessibility
Check four things in order: can the page be operated by keyboard alone, is every control and image labelled, does the text meet contrast and sizing requirements, and does the structure make sense without sight.
In order
Tab through the whole page: every interactive element should be reachable, in a sensible order, with a visible focus indicator, and nothing should trap focus. Modals should return focus where it came from.
Every form field with a real label rather than a placeholder, every button with a name that says what it does, every meaningful image with alternative text describing its information rather than its appearance, and decorative images marked as decorative.
Text contrast of at least 4.5:1, non-text controls at 3:1, interactive targets at least 24×24 pixels, text that reflows at 400% zoom without horizontal scrolling, and nothing conveyed by colour alone.
One H1, headings in order without skipped levels, landmarks used properly, and error messages that say what went wrong and how to fix it rather than just turning a field red. Then test the primary journey with a screen reader, because that is what automation cannot judge.
Unplug the mouse and complete your primary journey with the keyboard. It finds unreachable controls, missing focus indicators and focus traps in minutes, and those are among the most damaging failures.
They catch a minority: contrast, missing labels, heading order, target size. Whether alternative text is meaningful or a flow is usable with a screen reader requires a person.
Check four things in order: can the page be operated by keyboard alone, is every control and image labelled, does the text meet contrast and sizing requirements, and does the structure make sense without sight.
You have read what we think. If you want to know what it means for your case specifically, describe it and we will tell you which parts of accessibility checklist actually apply — and which do not.
