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PDF/A and external references

November 2025 by Peter Wyatt

PDF/A ensures reliable long-term rendering by embedding fonts, images, and color profiles, but URLs can still appear in text, hyperlinks, bookmarks, annotations, metadata, and embedded files.

Link annotations and URI Actions define clickable destinations, but PDF/A restricts certain action types to prevent external dependencies.

Guided by clear policies, comprehensive audits of both visible and hidden references help maintain authenticity, accessibility, and long-term integrity of PDF/A documents and digital collections.

PDF/A ensures reliable long-term rendering by embedding fonts, images, and color profiles, but URLs can still appear in text, hyperlinks, bookmarks, annotations, metadata, and embedded files.

Link annotations and URI Actions define clickable destinations, but PDF/A restricts certain action types to prevent external dependencies.

Guided by clear policies, comprehensive audits of both visible and hidden references help maintain authenticity, accessibility, and long-term integrity of PDF/A documents and digital collections.

Interview with Matt Kuznicki about PDF Days Europe 2016

April 2016 by PDF Association staff
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Matt Kuznicki, Chief Technical Officer at Datalogics, tells us about his plans for the PDF Days Europe 2016 conference in Berlin.

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April 2016 by PDF Association staff
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iText creator Bruno Lowagie tells us about his plans for the PDF Days Europe 2016 conference in Berlin.

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April 2016 by PDF Association staff
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For ECM professionals, PDF deserves your attention to maximize utility… and minimize risk.

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April 2016 by PDF Association staff
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As in previous years, the PDF Days Europe will act as a link between users and developers.

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April 2016 by PDF Association staff
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The scale of this year’s PDF Days Europe event allows us to focus on several distinct areas of interest.

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March 2016 by PDF Association staff
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The ISO standard for accessible PDF files costs 88 Swiss Francs. As of March 25 it’s also available from AIIM … Read more

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March 2016 by PDF Association staff
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June is the best time of the year to visit Berlin. The air is sweet, the trees are in bloom … Read more

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March 2016 by PDF Association staff
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This year, the successful PDF Days Europe will be held in Berlin. Across two days, you’ll be able to choose … Read more

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March 2016 by PDF Association staff
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This year, the established and popular PDF Days Europe will be held on June 14 and 15, 2016, in the … Read more

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February 2016 by PDF Association staff
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The new Chairman of the PDF/E Competence Center discusses the origin of the new organization in support of engineering applications … Read more

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February 2016 by Duff Johnson
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PDF files can be hard to search with confidence. Here’s why it matters, how it happens, and what you can … Read more

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