How to Automatically Tag a PDF: A Quick Guide.

Making PDFs accessible doesn’t have to be complicated. With PDFix Desktop, you can automatically tag PDFs using built-in AI recognition — turning unstructured files into fully accessible, standards-compliant documents in just minutes.

Managing Untagged or Improperly Tagged PDFs

In today’s digital landscape, a large percentage of PDFs are still untagged or tagged incorrectly.

Proper tagging is what gives a PDF its logical reading order and accessibility structure — identifying paragraphs, headings, tables, and figures so that screen readers can interpret the content correctly. Without tags, assistive technologies can’t read your document properly, creating barriers for people with visual impairments or other disabilities.

Improve Accessibility with “Make Accessible”

Once your document is opened in PDFix Desktop, enhancing accessibility is quick and simple.
Click the “Make Accessible” button on the Accessibility panel to automatically generate tags – it is set of commands set up together to create accesible document from unstructured PDF.

After the process, review the structure to verify that your document meets accessibility requirements.

Optimize Tagging Accuracy with Preflight

For more precise results, PDFix Preflight takes auto-tagging to the next level.
Preflight uses advanced recognition algorithms to detect headers, footers, headings, and layout patterns, refining how tags are generated.

Simply open the Template panel, activate the Preflight function, and then run Make Accessible again to apply optimized tagging.
This ensures your PDF’s structure is clean, logical, and accurate – even for complex layouts.

Auto-tagging may not always be perfect. PDFix Desktop also allows you to manually adjust or create new tags, giving you full control over your document’s accessibility structure.

Preflight
Example: a PDF optimized using Preflight for better tag accuracy.

Go Further: Auto-Tag PDFs with Templates

Want to save even more time while improving consistency? PDFix supports intelligent content recognition and pre-designed templates that can auto-tag similar documents with minimal effort — ideal for batch processing or repetitive layouts.

Watch our on demand webinar and explore the main auto-tagging methods in PDFix Desktop that help make PDFs accessible efficiently and accurately.

Key Benefits of PDFix Auto-Tagging

  • Automate accessibility tagging with AI and advanced recognition.
  • Improve tag accuracy using Preflight and Templates.
  • Save hours of manual work and ensure PDF/UA compliance.
  • Review, refine, and validate tags for perfect accessibility results.
  • Read more on auto-tagging methods with PDFix Desktop.