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PDF Fragment Identifiers

June 2024 by Peter Wyatt (PDF Association)

Websites can use URI fragments for PDF references so that when visitors need to interact with PDF content, the precise content can be referenced, providing a quick and helpful experience instead of a generic and unfriendly “it’s somewhere in this long PDF document – work it out for yourself”.

This article is for those who wish to focus on improving the user experience for website visitors needing to access specific content in PDF documents. In addition to a review of fragment identifiers and an analysis of current browser support, the article includes test URLs referencing PDFs with various features that can be used by, or influence, PDF fragment identifiers.

We hope that browser development teams will pay closer attention to the needs of their end-users when accessing web-delivered PDF content. This includes fully supporting a broader set of ISO-standardized PDF fragment identifiers in browsers’ default configurations.

Microsoft improves accessibility in their PDFs

May 2024 by PDF Association staff (PDF Association)
PDF in the Wild


Microsoft deepens its investment in Tagged PDF. We talked PDF with NISO. Both Android and iOS improve PDF handling. A major vulnerability was fixed in pdf.js.

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April 2024 by PDF Association staff (PDF Association)
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Hugging Face.AI examines PDF. New PDF support in Android. Google reinvents a 31 year-old PDF feature. FireFox wants you to … Read more

PDF in the Wild

March 2024 by PDF Association staff (PDF Association)
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The latest veraPDF release candidate adds PDF/UA-2 support. LibreOffice creates PDF/A and PDF/UA together. A “white paper” gets PDF wrong, … Read more

PDF in the Wild

February 2024 by PDF Association staff (PDF Association)
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PDF Week Online 2024 week 2 is coming up! Did you know that PDF 2.0 adds ARIA to PDF? How … Read more

PDF in the Wild

January 2024 by PDF Association staff (PDF Association)
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LibreOffice now supports PDF/UA! AI LLMs’ support for PDF is substandard, and is retarding innovation. Yet more misinformation about malware. … Read more

PDF in the Wild

December 2023 by PDF Association staff (PDF Association)
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Verizon is tricked by a fraudulent PDF, a family tree of PDF specifications, veraPDF is tops for the Open Preservation … Read more

PDF in the Wild

November 2023 by PDF Association staff (PDF Association)
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We wanted to know how well ChatGPT processes PDF files. So we signed up for ChatGPT 4.0, the paid version, … Read more

PDF in the Wild

October 2023 by PDF Association staff (PDF Association)
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The PDF Association is perhaps DARPA’s smallest-ever prime contractor. For DARPA’s SafeDocs program, however, it’s also the biggest success story.

PDF in the Wild

September 2023 by PDF Association staff (PDF Association)
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Funky (but legit!) PDF, sneaky malware PDF, poisoned PDF, PDF for LEGO, NASA does PDF… it’s a wild PDF world … Read more

PDF in the Wild

August 2023 by PDF Association staff (PDF Association)
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LLMs and generative artificial intelligence, as much (or more) than everything else computers can do, is subject to the iron … Read more

PDF in the Wild

July 2023 by PDF Association staff (PDF Association)
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The most recent specification of PDF doesn’t limit page size… at all. That’s up to the implementation.

PDF in the Wild

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