PDF Accessibility Checker — Free WCAG 2.1 AA & PDF/UA Test

PDF Accessibility Checker — Test Your PDF Against WCAG 2.1 AA & PDF/UA

Welcome to the AccessiTool PDF Accessibility Checker — your free tool for testing PDF documents against WCAG 2.1 Level AA and PDF/UA (ISO 14289) standards. Whether you're a document creator, developer, or business owner, our PDF accessibility checker helps you ensure your PDFs are accessible to people who rely on screen readers and assistive technologies.

With our free PDF accessibility checker, you can instantly upload any PDF and check for tags, reading order, alt text, form fields, and more. It's that simple.

Why PDF Accessibility Matters for Legal Compliance

ADA Title III, Section 508, and the European Accessibility Act (EAA) explicitly cover PDF documents. Lawsuits citing inaccessible PDFs — such as bank statements, medical forms, and product manuals — have increased significantly. Common failures include missing tags, incorrect reading order, and images without alt text — all of which can trigger legal action and fines.

ADA compliance for PDF documents is required under ADA Title III. Courts have ruled that PDF documents offered on websites must be accessible to people with disabilities. ADA compliant PDF files must meet WCAG 2.1 Level AA standards.

Section 508 PDF compliance is required for all federal agencies and organizations receiving federal funding. Section 508 compliant PDF documents must meet WCAG 2.1 Level AA and PDF/UA standards.

The European Accessibility Act (EAA) requires PDF documents offered as part of covered services (e-books, banking statements, healthcare forms) to be accessible. Non-compliant PDFs can result in fines up to €100,000.

Common PDF Accessibility Failures

1. Untagged PDF

Issue: Screen readers cannot interpret untagged documents. When a PDF has no tags, it appears as a single block of text with no structure.

Fix: Add tags using Adobe Acrobat Pro → Tools → Accessibility → Add Tags to Document.

2. Missing Alt Text for Images

Issue: Charts, logos, and images without descriptions. Screen readers say "image" or skip the image entirely.

Fix: Set Alternate Text in Acrobat (right-click image → Edit Alternate Text).

3. Incorrect Reading Order

Issue: Content reads in wrong sequence. Screen readers read content in the order it appears in the tag structure.

Fix: Use the Reading Order tool in Acrobat Pro → Touch Up Reading Order → drag to correct order.

4. Empty or Missing Form Fields

Issue: Interactive forms without labels — screen reader users don't know what information to enter.

Fix: Use Prepare Form tool → right-click field → Set Tooltip or Label.

5. No Language Specification

Issue: PDFs missing /Lang entry cause screen reader pronunciation errors.

Fix: File → Properties → Advanced → Language → Set document language.

How Our PDF Accessibility Checker Works

Our free PDF accessibility checker analyzes your uploaded PDF document against WCAG 2.1 Level AA and PDF/UA standards. While our automated scan cannot replace a full manual audit, it quickly detects missing tags, alt text issues, and reading order anomalies. You'll receive a compliance score and a prioritized list of fixes.

Our PDF accessibility checker checks for:

• ✅ PDF is tagged (not "untagged")
• ✅ Tags represent logical document structure
• ✅ All images have alt text
• ✅ Reading order is correct
• ✅ Form fields have proper labels
• ✅ Document title is set
• ✅ Document language is specified
• ✅ Tables have header rows identified
• ✅ Bookmarks exist for long documents (25+ pages)
• ✅ Color contrast meets 4.5:1 (if applicable)

PDF Accessibility Checklist

This article is for general informational purposes and isn't legal advice. PDF accessibility obligations and enforcement can vary by jurisdiction, so consult qualified legal counsel for guidance specific to your situation.