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Web Accessibility Checkers & References

Check heading structure, alt text, link wording, colour contrast and touch target sizes.

Convertto's accessibility tools check the things that break screen readers and keyboard navigation most often: heading levels that skip, missing or unhelpful alt text, vague link wording such as "click here", colour contrast below WCAG thresholds, missing landmarks, and touch targets under the minimum size. Each check runs in your browser and cites the WCAG success criterion it maps to.

7 tools in this category

All accessibility

Alt Text CheckerFind images with missing, empty, filename-based or overlong alternative text.
ARIA Roles ReferenceSearch ARIA roles with their required attributes, native HTML equivalents and gotchas.
Heading Structure ValidatorCheck a page for skipped heading levels, missing or multiple H1s and empty headings.
HTML Landmark CheckerCheck a page for the landmark regions screen reader users navigate by.
Link Text CheckerFind vague link wording — "click here", "read more", bare URLs and duplicated labels.
Palette Accessibility GraderGrade every colour in a palette against one or more backgrounds for WCAG contrast.
Touch Target Size CheckerCheck whether a button or link meets the minimum tap target size and spacing.

Frequently asked questions

Do these tools guarantee WCAG compliance?

No. Automated checks reliably catch roughly a third of WCAG issues — the machine-testable ones. Keyboard operation, focus order, meaningful sequence and whether alt text is actually accurate all require a human. Treat a clean result as a floor, not a certificate.

Which WCAG version do these follow?

WCAG 2.2 Level AA, which is the level referenced by most legislation including the European Accessibility Act and Section 508. Each tool names the specific success criterion it tests.

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