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Techniques for Accessible PDF: Headings

April 2025 by PDF Association staff

Headings are vital in organizing document content, especially with longer or complex documents. For assistive technology, the correct use of headings allows what would otherwise be an undifferentiated stream of text to become a navigable document in which readers can quickly find the content they want to read, and skip the content they don’t want to read.

Getting headings right is especially important with PDF documents, which can be very long, and may include deeply nested headings, multiple documents, document fragments, and more. Accessibility techniques for headings may therefore differ from techniques that are applicable to other technologies such as HTML.

On this basis the PDF Association is pleased to announce its second release of Techniques for Accessible PDF covering headings.

AI pirates and more from PDF in the Wild!

April 2025 by PDF Association staff
PDF in the Wild


AI’s Pirated-Books Problem | Correcting US financial regulations referencing PDF | New crawl limit improves CC’s capture of PDF | W3C note on “Accessibility of machine learning and generative AI” … Read more

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March 2025 by PDF Association staff
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When will AI understand document semantics? | Will LLM-based OCR live up to the challenge? | Indicating whether the publisher … Read more

PDF in the Wild

February 2025 by PDF Association staff
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PDF bookmarks from Google Chrome? | What does “PDF” mean to you? | Two reasons why everyone needs PDF | … Read more

PDF in the Wild

January 2025 by PDF Association staff
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Doom in a PDF | PDF Week Boston 2025 | The EAA is coming! | AI and accessibility standards | … Read more

PDF in the Wild

December 2024 by PDF Association staff
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A close-up look at how PDF does text | What would Patton think? | Word bug blocks PDF/UA validators, Happy … Read more

PDF in the Wild

November 2024 by PDF Association staff
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New guidance on PDF Portable Collections and on digitizing paper. | US Army website features PDF/UA | PDFism! | Scratch-and-sniff … Read more

PDF in the Wild

October 2024 by PDF Association staff
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In 2025 Europe will require ebooks to be accessible and include detailed accessibility metadata while Germany will require e-invoicing. | … Read more

PDF in the Wild

September 2024 by PDF Association staff
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File type for downloadable forms, in 3 letters | Mobile devices are pain-points for forms | But, Android support for … Read more

PDF in the Wild

August 2024 by PDF Association staff
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Devs must VALIDATE before applying ISO-standardized subset metadata to PDFs! | PDF Week Prague accommodations | OPF patches JHOVE | … Read more

PDF in the Wild

July 2024 by PDF Association staff
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Wired likes PDF/A, Google and Apple do PDF creation from phone cameras, EA-PDF is already in the wild, the latest … Read more

PDF in the Wild

June 2024 by PDF Association staff
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What do “first class companies” do? Japanese media covers the PDF Association in Tokyo. Firefox adds experimental alt. text generation … Read more

PDF in the Wild

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