📘 ISO 32000-1 Standard
A PDF is only as good as its tags.
In the world of accessibility, PDFs have a reputation for being "digital paper"—static, unchangeable, and often invisible to screen readers. But a correctly authored PDF is a highly structured, semantically rich document. This guide covers how to use Adobe Acrobat Pro to ensure your portable documents meet global accessibility standards.
Creating for Accessibility
Accessibility starts before you even open Acrobat. The best way to create an accessible PDF is to start with a "born accessible" source document:
1. Source Conversion
Always use the "Save as PDF" or "Export" features in Microsoft Word or PowerPoint. Avoid "Printing to PDF," as this often strips out the tags and structural metadata required for
WCAG SC 1.3.1 (Info and Relationships).
2. Scanned Documents (OCR)
If you must use a scanned document, you must use the Recognize Text tool. Without Optical Character Recognition, a PDF is just a giant image, violating
WCAG SC 1.1.1 (Non-text Content).
The Accessibility Setup Assistant
Acrobat Pro includes a specialized wizard to configure the environment for users of assistive technology:
- Go to Menu > View > Read Out Loud > Activate.
- Open All Tools > Prepare for Accessibility.
- Select Setup Assistant to set high-contrast display options and configure how many pages the screen reader should process at once.
The Full Check Audit
Adobe's "Full Check" is the industry standard for PDF verification. It checks for 31 different accessibility criteria, grouped into categories:
Document-Level Checks
Ensures the document has a title, specified language, and is correctly tagged to satisfy
WCAG SC 2.4.2 (Page Titled).
Page Content & Reading Order
Identifies if the reading order follows a logical path and if non-text elements have alt text, supporting
WCAG SC 1.3.2 (Meaningful Sequence).
Tables, Lists, and Links
Verifies that data tables have headers and lists are correctly formatted. Note: The checker will often prompt for a "Manual Check" for reading order, as AI cannot always determine the intent of a complex layout.
Accessible PDF Forms
Interactive forms are the highest-risk elements in a PDF. To ensure compliance with
WCAG SC 4.1.2 (Name, Role, Value), follow these steps:
- Tooltips as Labels: In PDF forms, the "Tooltip" field in the form property dialog acts as the accessible name for screen readers. Never leave it blank.
- Tab Order: Use the Fields pane to drag and drop fields into the correct sequential order.
- Required Fields: Clearly mark required fields and ensure the state is programmatically set in Acrobat.
SimpleAccess Insight: The "Tag" Mantra
If there is one thing to remember about PDF accessibility, it is this: Tags are everything. Tags provide the invisible structure that maps the visual document to the accessibility tree. A PDF without tags is just a collection of ink; a PDF with tags is a professional, accessible standard.
Always finish your process by opening the Tags Pane to ensure your H1s, Ps, and Figures are where they belong.