WCAG Validator

Free WCAG validator tool to check website accessibility compliance with WCAG 2.1 and 2.2 standards. Test URLs or upload HTML files.

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About This Tool

This free WCAG validator tool helps you check your website's accessibility compliance with Web Content Accessibility Guidelines (WCAG) 2.1 and 2.2 standards. Simply enter a URL or upload an HTML file, select the WCAG version you want to validate against, and get a detailed accessibility report. The tool checks for common accessibility issues including color contrast, keyboard navigation, ARIA attributes, semantic HTML structure, and more. Perfect for developers, designers, and content creators who need to ensure their websites are accessible to all users, including those with disabilities.

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How to Use

Enter a website URL in the input field or upload an HTML file using the file upload area
Select the WCAG standard you want to validate against (WCAG
1 or WCAG
Click the 'Validate Accessibility' button to start the analysis
View the detailed results showing passed checks, errors, warnings, and actionable recommendations
Review each accessibility issue with specific guidance on how to fix it

Frequently Asked Questions

Find Quick Answers

What is WCAG and why is it important?

WCAG (Web Content Accessibility Guidelines) are international standards for making web content accessible to people with disabilities. Compliance is important for legal requirements (like ADA and Section 508), ethical inclusion, and reaching a wider audience.

What's the difference between WCAG 2.1 and WCAG 2.2?

WCAG 2.2 builds upon WCAG 2.1 with additional success criteria focused on mobile accessibility, low vision users, and cognitive disabilities. WCAG 2.1 includes 78 success criteria, while WCAG 2.2 adds 9 new criteria for a total of 87.

Does this tool check all WCAG success criteria?

This tool checks the most common and automatable WCAG success criteria including color contrast, keyboard navigation, image alt text, form labels, heading structure, and ARIA attributes. Some criteria require manual testing and are noted in the results.

Can I validate password-protected or local websites?

For password-protected websites, you can upload the HTML file directly. For local development sites, use the file upload feature or make the site accessible via a temporary public URL.

How accurate is the WCAG validation?

The tool provides accurate automated testing for technical accessibility issues. However, some aspects like meaningful link text, logical reading order, and cognitive accessibility require human review. The tool highlights areas needing manual verification.

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