Add Alt Text to Images
Add alternative text for accessibility
Accessibility Checker
Check for basic accessibility issues
This tool processes your files entirely in your browser. Your documents never leave your device.
Input
Drag & drop PDF files here
or Browse Files
PDF, PDF•Max size: 100MB per file
Check Results
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About This Tool
Check PDF accessibility with our free online accessibility auditing tool. Identify common issues like missing tags, images without alt text, and reading order problems that affect screen reader compatibility.
Scan documents for accessibility issues and receive a report of problems found. Identify missing alternative text, improper heading structure, untagged content, and other barriers to accessibility. Helps prepare documents for WCAG and PDF/UA compliance.
All accessibility checking happens locally in your web browser. Your documents never upload to external servers, ensuring privacy for materials undergoing accessibility review and compliance preparation.
Perfect for preliminary accessibility audits, identifying issues before professional review, preparing documents for publication, or improving document usability. Note: Basic checks only—for full compliance verification, use dedicated accessibility tools like Adobe Acrobat Pro's accessibility checker or PAC 3. Works with all PDF files.
Frequently Asked Questions
- Is Accessibility Checker free?
- Yes, completely free with no hidden costs, subscriptions, or usage limits. All tools are available at no charge.
- Is it safe to use Accessibility Checker?
- Yes, 100% safe. All processing happens locally in your browser. Your files are never uploaded to any server and never leave your device.
- What is the maximum file size?
- You can process files up to 100MB. Since everything runs in your browser, processing speed depends on your device.