HTML Accessibility Validator
Run a multi-check HTML audit across headings, forms, ARIA, language, tables, images, and landmarks.
Paste HTML
Accessibility report
2 issues detected — 0 critical, 2 serious, 0 moderate, 0 minor.
- Critical
- 0
- Serious
- 2
- Moderate
- 0
- Minor
- 0
- Info
- 8
No headings found
Pages without headings force screen-reader users to read linearly with no way to skim structure.
Fix: Add at least one <h1> that describes the page, and use h2/h3 to structure sections.
No <img> elements found
Nothing to check. If your page uses CSS background images conveying meaning, replace them with <img alt> or add ARIA labels.
InfoWCAG 1.1.1No form controls found
Paste HTML with input/select/textarea to audit.
InfoWCAG 1.3.5No <main> landmark
Screen-reader users rely on a <main> landmark to jump straight to primary content.
Fix: Wrap the primary content in a single <main> element.
Language attributes look correct
<html lang="en"> is set and no obvious inline language changes were flagged.
InfoWCAG 3.1.1No tables found
Paste HTML with a <table> to audit.
InfoWCAG 1.3.1No <svg> elements found
Paste HTML containing SVG markup to audit.
InfoWCAG 1.1.1No focusable elements
No links, buttons, or form controls found in the markup.
InfoWCAG 2.1.1No motion accessibility issues detected
Animations respect prefers-reduced-motion or none were found.
InfoWCAG 2.3.3No links found
There are no anchor elements to review in this HTML.
InfoWCAG 2.4.4
Editorial guidance
How this audit tool supports accessibility work
The html accessibility validator is designed to turn a common accessibility review task into a repeatable workflow. It focuses on run a multi-check html audit across headings, forms, aria, language, tables, images, and landmarks. The goal is not to replace expert judgment, but to make the first review faster, more consistent, and easier to explain to designers, developers, QA teams, and content owners.
Use the output as evidence for a remediation conversation. A failed check normally means the implementation needs a closer look against WCAG 1.1.1, 1.3.1, 2.4.2, 4.1.2, while a passing check means the specific automated rule did not find a problem. Passing automated checks is helpful, but it is not the same as a full conformance claim.
For best results, test real production markup instead of simplified snippets. Templates, CSS state, JavaScript behavior, responsive layouts, and content changes can all affect the final accessibility experience. Re-run the tool after fixes so the before-and-after evidence is easy to compare.
Pair this tool with manual keyboard testing, zoom and reflow checks, screen-reader review, and content judgment. Those human checks catch issues that automated logic cannot reliably infer, such as whether labels are meaningful, instructions are clear, or a complete user task can be finished without a mouse.
How to use
- 1Open the html accessibility validator and enter the page content, settings, or code you want to test or generate.
- 2Review the result cards, scores, or generated code to identify the safest accessible option before implementation.
- 3Copy the recommended fix or starter markup, then validate it again in your real product with keyboard and assistive technology testing.
FAQs
Tips here are tailored for the html accessibility validator so people can move from checking to fixing faster.
What to verify manually
Keyboard: move through the related flow with Tab, Shift+Tab, Enter, Space, Escape, and arrow keys where the pattern expects them.
Assistive technology: check names, roles, states, reading order, announcements, and focus changes with at least one screen reader.
Content quality: confirm that instructions, labels, headings, errors, and alternatives make sense in the real user task.
This page is written as practical guidance, not a legal certification. For procurement, VPAT/ACR work, or regulated launches, combine tool output with expert review and documented manual test results.
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Learn the concepts behind this tool
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