PDF Accessibility: How to Make Your PDFs ADA and WCAG Compliant

Why PDF Accessibility Matters

Over 1 billion people worldwide live with some form of disability. Many rely on assistive technologies like screen readers to access digital content. When PDFs aren't properly structured, these users are excluded from accessing important information.

Beyond the ethical imperative, accessibility is increasingly a legal requirement. The 2024 Department of Justice ruling under Title II of the ADA now requires state and local government entities to ensure their web content, including PDFs, meets WCAG 2.1 Level AA standards.

Understanding Accessibility Standards

Several standards govern PDF accessibility:

Key Elements of Accessible PDFs

1. Document Structure and Tags

Tagged PDFs contain a hidden structure that describes the content's logical organization. Tags identify headings, paragraphs, lists, tables, and other elements, allowing screen readers to navigate the document meaningfully.

Tags should reflect the visual hierarchy: main titles as Heading 1, subsections as Heading 2, and so on. This structure enables users to jump between sections, understand the document organization, and navigate efficiently.

2. Reading Order

The reading order determines how assistive technologies traverse the document. For multi-column layouts or complex designs, the visual order may differ from the underlying code order. You must explicitly set the correct reading sequence.

3. Alternative Text for Images

Every meaningful image must have alternative text (alt text) that describes its content or function. Decorative images should be marked as artifacts so screen readers skip them.

Good alt text is concise but descriptive. Instead of "image1.jpg" or "chart", use "Bar chart showing quarterly sales growth from Q1 to Q4 2025, with Q4 reaching $2.4M."

4. Text-Based Content

PDFs should use real, selectable text rather than images of text. Scanned documents need OCR (Optical Character Recognition) processing to convert page images into searchable, accessible text layers.

5. Color and Contrast

Text must have sufficient contrast against its background. WCAG 2.1 Level AA requires a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text. Information should never be conveyed by color alone.

6. Document Metadata

Accessible PDFs must include proper metadata:

• Title: Descriptive document title (not filename)
• Language: Primary language of the document
• Author: Document creator or organization

Use our PDF Metadata tool to add or update these properties.

Accessibility Checklist

How to Create Accessible PDFs

From Microsoft Word

Word documents with proper styles (Heading 1, Heading 2, etc.), alt text on images, and table headers will export to accessible PDFs:

• Use built-in heading styles, not manual formatting
• Add alt text: right-click image → Edit Alt Text
• Use real bulleted/numbered lists, not manual bullets
• Define table headers: select header row → Table Design → Header Row
• Export: File → Save As → PDF → Options → Document structure tags

From Google Docs

Google Docs has more limited accessibility export options, but you can improve results:

• Use heading styles from Format → Paragraph styles
• Add alt text: right-click image → Alt text
• Download as PDF (File → Download → PDF)
• May need post-processing in Adobe Acrobat for full compliance

Using Adobe Acrobat

Adobe Acrobat Pro provides the most comprehensive accessibility tools:

• Accessibility Checker: finds and reports issues
• Reading Order tool: manually adjust content sequence
• Tags panel: edit document structure
• Touch Up Reading Order: fix tagging issues
• Action Wizard: automate accessibility fixes

Testing PDF Accessibility

Always test your PDFs after creating them:

Frequently Asked Questions

What makes a PDF accessible?

An accessible PDF is properly tagged with a logical reading order, includes alt text for images, uses real text (not images of text), has sufficient color contrast, includes document metadata (title, language), and has navigational aids like bookmarks. These elements allow screen readers and other assistive technologies to interpret the document correctly.

Is PDF accessibility legally required?

For many organizations, yes. In the US, the ADA requires accessible digital content for public accommodations and government entities. The 2024 DOJ ruling requires state and local governments to meet WCAG 2.1 Level AA for web content including PDFs. Section 508 requires federal agencies to use accessible documents. Similar laws exist in the EU (European Accessibility Act), UK (Equality Act), and other regions.

How do I test if my PDF is accessible?

Use Adobe Acrobat's built-in Accessibility Checker (Full Check), free tools like PAC 2024 (PDF Accessibility Checker), or PAVE. Test with actual screen readers like NVDA (free) or JAWS. Check that all text can be selected, images have alt text, reading order is logical, and headings are properly structured.