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Form Error Accessibility Checker

Paste any form HTML to instantly detect accessibility issues that prevent screen reader users from understanding and correcting errors. The tool checks for missing accessible names, unlinked error message elements, missing role=alert/aria-live regions, radio/checkbox groups without fieldset, and missing error summaries.

Why This Matters

Forms are one of the most common sources of WCAG failures. Error messages that only appear visually — without programmatic links to their input fields — are completely invisible to screen reader users. WCAG 3.3.1 (Level A) requires errors to be identified and described in text.

How to Use This Tool

  1. 1

    Paste form HTML

    Copy your form's HTML and paste it into the text area, or click "Load problematic example" to see a demonstration.

  2. 2

    Review issues

    Errors, warnings, and informational notes appear with specific element selectors and WCAG references.

  3. 3

    Apply fixes

    Each issue includes a specific code fix. Copy the fix and apply it to your HTML.

  4. 4

    Download report

    Download a plain-text report for documentation or sharing with developers.

Frequently Asked Questions

What does aria-describedby do?

aria-describedby links an input to a descriptive element (like an error message) by ID. When the input receives focus, screen readers announce both the input's label and the description — making the error audible.

When should I use role=alert vs aria-live?

Use role=alert (which implies aria-live="assertive") for critical errors that require immediate attention. Use aria-live="polite" for status messages that don't need to interrupt the user. For form validation errors, role="alert" is usually correct.

Does this catch all form accessibility issues?

No. Static HTML analysis cannot detect JavaScript-driven behavior, CSS-only error states, or timing issues. This tool catches common structural problems. Always test with a real screen reader (NVDA, JAWS, VoiceOver) for complete validation.

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