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WAI-ARIA 1.2 Syntax & Semantic Role Validator

Validate ARIA roles, detect redundant HTML5 semantics, and ensure required attribute compliance

WAI-ARIA 1.2 Syntax & Semantic Role Validator

Paste your component HTML or JSX to check for invalid roles, redundant markup, and missing attributes.
Load Sample:
Total Issues
4
Errors
0
Warnings
4
Valid Roles
4

Audit Findings & Recommendations

warningWCAG 4.1.2 (Name, Role, Value)

Redundant ARIA: <button> does not need explicit role="button". Native <button> already has implicit role="button".

<button role="button" onclick="submit()">
warningWCAG 4.1.2 (Name, Role, Value)

Redundant ARIA: <a> does not need explicit role="link". Native <a> already has implicit role="link".

<a href="/" role="link">
warningWCAG 4.1.2 (Name, Role, Value)

Redundant ARIA: <nav> does not need explicit role="navigation". Native <nav> already has implicit role="navigation".

<nav role="navigation">
warningWCAG 4.1.2 (Name, Role, Value)

Redundant ARIA: <header> does not need explicit role="banner". Top-level <header> has implicit role="banner".

<header role="banner">

About WAI-ARIA 1.2 Syntax & Semantic Role Validator

Audit component HTML and JSX markup against the W3C WAI-ARIA 1.2 specification. Catch redundant roles, missing state attributes, and keyboard-inaccessible div click handlers.

Key Capabilities & Features

  • WAI-ARIA 1.2 role catalog validation
  • Redundant HTML5 role detection (e.g. <button role="button">)
  • Missing required attributes checker (slider, combobox)
  • Non-semantic clickable element detector
  • Categorized error and warning reports with WCAG criteria

How to Use WAI-ARIA 1.2 Syntax & Semantic Role Validator

1

Paste Code

Paste component HTML, JSX, or web template snippet.

2

Run Validation

Review flagged semantic errors, warnings, and best practices.

3

Fix & Clean

Remove redundant ARIA and apply native HTML elements.

Privacy & In-Browser Execution Guarantee

Your code snippets are evaluated locally in browser JavaScript. No code leaves your machine.

Frequently Asked Questions

What is the First Rule of ARIA?

If you can use a native HTML element or attribute with the semantics and behavior already built in, do that instead of re-purposing an element and adding ARIA.

Why is <button role="button"> redundant?

Native HTML5 <button> already possesses implicit ARIA role="button", keyboard focusability, and Enter/Space event handling, making the explicit attribute unnecessary.

What attributes does role="slider" require?

WAI-ARIA requires aria-valuenow (current value), and recommends aria-valuemin, aria-valuemax, and aria-valuetext for screen readers.

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