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March 2024 by Peter Wyatt (PDF Association)

Does the PDF version actually matter?

A key finding of recent research: at least 20% of PDF files on the web have an “invalid” PDF version!

However, as our experience with everyday PDF files appears to be unhampered by these inaccurate version numbers the answer to the question, generally speaking, is “no”. 

One important explanation for why the file’s stated version number lacks relevance is that most PDF features are designed to be backward-compatible. There is no need for general PDF software to fail on a document or warn users when it encounters a minor mis-versioned feature – either the software is coded to understand the feature or it ignores the effectively unknown feature(s) that it doesn’t understand. This is today’s experience with most PDF software.

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Tagged PDF Q & A

March 2024 by PDF Association staff (PDF Association)
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Authoritative answers to common questions about Tagged PDF, WTPDF and PDF/UA.

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March 2024 by Peter Wyatt (PDF Association)
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Peter Wyatt shares his custom metadata panels – very useful for discovering ISO standards and PDF Declarations metadata! (until vendors … Read more

Article

March 2024 by PDF Association staff (PDF Association)
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Based on WTPDF, ISO 14289-2 serves to assure institutions that the PDF Association’s requirements for creating and validating accessible PDF … Read more

Announcement

March 2024 by PDF Association staff (PDF Association)
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Join pdfa.org for exclusive member benefits tailored to PDF development. Our Member Benefit Manager, Melina, engages in insightful discussions with … Read more

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March 2024 by PDF Association staff (PDF Association)
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The PDF Association has established a new Liaison Working Group (LWG) to serve as a place for forensics experts and … Read more

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February 2024 by PDF Association staff (PDF Association)
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Well-Tagged PDF (WTPDF), a common specification for both reuse and accessibility, is a massive leap forward for PDF technology.

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February 2024 by Duff Johnson (PDF Association)
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It’s time for AI integrators to help authors make semantically rich documents… and step up their game on PDF inputs.

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February 2024 by PDF Association staff (PDF Association)
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All PDF Association Full and Liaison Members who have joined Technical and/or Liaison Working Groups are welcome for two weeks … Read more

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January 2024 by PDF Association staff (PDF Association)
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A major focus of the PDF Association’s work is to increase awareness and adoption of standards and best practices for … Read more

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January 2024 by PDF Association staff (PDF Association)
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The PDF, ICC, NITF and video datasets used in SafeDocs’ performer hackathons and evaluations are now available for download from … Read more

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January 2024 by PDF Association staff (PDF Association)
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Adobe’s Standards Support Endowment, now in its sixth year, facilities administration of ISO TC 171 SC 2 and sustains the … Read more

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