Accessibility Checker
WCAG 2.1 AA checks
on every page.
Rocket Vitals runs axe-core across your entire site — both desktop and mobile — surfacing colour contrast failures, keyboard traps, missing ARIA labels, and more.
WCAG violations
60+ axe-core rules
Mobile A11y
Mobile viewport tested
Screen readers
ARIA & semantic checks
Keyboard access
Focus & trap detection
What we check
Comprehensive accessibility testing, not just quick wins.
Color contrast failures
Tests every text element against WCAG AA contrast ratios (4.5:1 normal text, 3:1 large text) on both desktop and mobile.
Images missing alt text
Flags images without alt attributes or with empty alt text where a description is needed by screen reader users.
Keyboard & focus issues
Detects keyboard traps where focus cannot be moved away, and pages where the focus indicator is not visible.
Form labels & button text
Checks that every input has an associated label and every button has accessible text — not just an icon.
ARIA correctness
Surfaces invalid ARIA attributes, missing ARIA labels on interactive elements, and duplicate element IDs.
Heading structure
Validates heading hierarchy — catches skipped levels, empty headings, and pages that lack an H1.
Links with no text
Identifies anchor elements with no visible or accessible text that leave screen reader users without context.
60+ axe-core rules
Runs the full axe-core accessibility rule set on both desktop and mobile viewports for comprehensive coverage.
Rocket Vitals by Rocket Park
Find accessibility barriers before your users do.
Enter any URL and get a full accessibility report — with severity ratings, affected elements, and plain-English guidance for every issue found.
Run accessibility check →