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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.

The latest developments in digital printing and PDF/X

April 2016 by Matthias Wagner
News


The 2016 PSD handbook version is published – German version will be provided soon.

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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.

Article

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

Article

April 2016 by Duff Johnson
Duff Johnson
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PDF’s value-proposition is exemplified by a USB key developed to monitor temperatures in shipping containers.

News

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.

Article

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.

Article

March 2016 by Duff Johnson
Duff Johnson
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veraPDF 0.12 features improved PDF/A-2b and PDF/A-3b validation and a complete REST API.

News

March 2016 by Duff Johnson
Duff Johnson
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An optional PDF/UA conversion add-on will soon allow users to create PDF/UA documents from Google Docs.

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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

Article

March 2016 by Duff Johnson
Duff Johnson
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PDF/UA is the newest US National Standard, and it’s available for only $15 from aiim.org!

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March 2016 by Duff Johnson
Duff Johnson
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It’s a milestone release for this open source, permissively-licensed Java software for PDF creation and processing.

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