E
EZPDF

PDF Accessibility Guide - Creating Documents Everyone Can Read

·EZPDF Team·3 min read
PDFAccessibilityGuide

PDF accessibility means making documents usable by people with visual, motor, or cognitive disabilities. Beyond being the right thing to do, it's increasingly becoming a legal requirement across many countries.

Why PDF Accessibility Matters

For Users

  • Approximately 1.3 billion people worldwide live with some form of disability (WHO)
  • People with visual impairments use screen readers to consume documents
  • Elderly users rely on zoom, text-to-speech, and other accessibility features

Legal Requirements

  • United States: ADA (Americans with Disabilities Act) and Section 508
  • European Union: European Accessibility Act (effective from 2025)
  • South Korea: Disability Discrimination Act mandates web content accessibility for public institutions
  • Many countries: Expanding digital accessibility laws

Business Benefits

  • Accessible documents rank better in search engines
  • Reach a wider audience
  • Demonstrate corporate social responsibility

Key Elements of Accessible PDFs

1. Structured Tags

Proper tags (headings, paragraphs, lists) allow screen readers to understand and communicate document structure to users.

2. Image Alt Text

Every image needs descriptive alternative text. Screen readers can't display images, so they read the alt text instead.

3. Reading Order

Content must flow in a logical reading sequence. Especially important for multi-column layouts and complex designs.

4. Color Contrast

Sufficient contrast between text and background ensures readability for low-vision users. A minimum contrast ratio of 4.5:1 is recommended.

5. Font Size and Readability

Use at least 12pt fonts. Content should remain intact when zoomed.

6. Descriptive Links

Use "View privacy policy" instead of "Click here." Link text should describe the destination.

How to Create Accessible PDFs

Method 1: Build from Source Documents (Recommended)

Design accessibility into your source documents (Word, Google Docs) and it carries over to PDF:

  • Use heading styles (H1, H2, H3) for document structure
  • Add alt text to all images
  • Designate header rows in tables
  • Don't convey information through color alone

Method 2: Edit Existing PDFs

For PDFs that already exist:

  • Use Adobe Acrobat Pro's accessibility checker
  • Add and edit tags
  • Adjust reading order

Method 3: OCR for Scanned Documents

Scanned documents are image-only, making text search and screen readers impossible. The OCR PDF tool adds a text layer, providing basic accessibility.

PDF/A and Accessibility

PDF/A is designed for long-term preservation. The "a" conformance levels (PDF/A-1a, PDF/A-2a, PDF/A-3a) include accessibility requirements like tagging and Unicode mapping, combining preservation with accessibility.

EZPDF's PDF/A converter can convert standard PDFs to PDF/A format.

PDF Accessibility Checklist

  • [ ] Document has proper tags?
  • [ ] All images have alt text?
  • [ ] Reading order is logical?
  • [ ] Sufficient color contrast?
  • [ ] Fonts are large enough and readable?
  • [ ] Link text is descriptive?
  • [ ] Tables have designated headers?
  • [ ] Document title is set?
  • [ ] Document language is specified?

Conclusion

PDF accessibility is a necessity, not an option. Making documents accessible is important technically, legally, and ethically.

EZPDF helps improve PDF accessibility through OCR, PDF/A conversion, and other tools. All tools are free and process safely in your browser.