### HTML Input

WCAG Level

HTML Code_\<h1\>Welcome\</h1\> \<img src='image.jpg'\> \<button\>Click me\</button\>_

Scan for Issues  Show Preview

### Results & Preview

Summary  Issues

0

Errors

0

Warnings

0

Info

Export Report as JSON

# WCAG Accessibility Checker for HTML

Check pasted HTML for selected accessibility issues, including missing image alt attributes, form labels and heading structure. This preliminary check cannot establish WCAG conformance or measure color contrast.

## Key Features

#### Automated Scanning

Detect common accessibility issues automatically

#### Multiple Checks

Alt text, labels, headings, ARIA, and more

#### WCAG Levels

Choose a level to adjust selected checks; a full assessment is still needed.

#### Export Reports

Download detailed JSON reports

## What is WCAG 2.1 Compliance Checker?

This HTML accessibility checker flags selected issues in the markup you paste. It does not inspect a live website, calculate color contrast, test keyboard interaction or certify WCAG compliance. Follow up with manual assessment and real assistive-technology testing.

For example, an image without an alt attribute is flagged, while an empty alt can be appropriate for a decorative image. Form labels and heading order require human review in context. Use [Screen Reader Preview](https://www.toolcomb.com/screen-reader-preview) for an approximate HTML summary, then verify behavior with real assistive technology.

### How to Use

1. Paste your HTML code into the input area
2. Select your target WCAG compliance level
3. Click "Scan for Issues"
4. Review the results and suggestions
5. Export the report for documentation

### Checks Performed

#### Images & Media

Flags images with a missing alt attribute; review the text and whether each image is decorative.

#### Forms

Flags some missing labels; review accessible names and form behavior manually.

#### Headings

Flags some skipped heading levels for review.

#### Semantic HTML

Flags some clickable div elements; it cannot validate all semantics.

### Frequently Asked Questions

#### What is WCAG 2.1?

Web Content Accessibility Guidelines 2.1 is a set of recommendations for making web content more accessible to people with disabilities.

#### What are the WCAG levels?

Level A is basic, Level AA is recommended, and Level AAA is enhanced accessibility.

#### Does this checker test everything?

No, some issues require manual testing. This tool automates common checks.

#### Can I test external websites?

This tool tests HTML code you provide. For external sites, use browser extensions.

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### Related guides

Read the how-to, then come back to this tool when you are ready to run it locally.

- [A Practical WCAG Checklist You Can Run in the Browser Accessible names, contrast, and structure checks you can run while you build.](https://www.toolcomb.com/blog/practical-wcag-checklist-in-the-browser)
- [How Screen Readers Interpret Your HTML Headings, labels, and alt text as a screen reader would announce them.](https://www.toolcomb.com/blog/how-screen-readers-interpret-html)

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