PDF Association logo

Discover pdfa.org

Key resources

Get involved

How do you find the right PDF technology vendor?
Use the Solution Agent to ask the entire PDF communuity!
The PDF Association celebrates its members’ public statements
of support
for ISO-standardized PDF technology.

Member Area

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.

ZUGFeRD 1.0 – English Version Released

January 2015 by Matthias Wagner
News


Electronic invoices: New uniform data format ZUGFeRD saves money and helps SMEs

Visit Matthias Wagner's profile.

January 2015 by PDF Association staff
PDF Association logo
Visit PDF Association staff‘s profile.

PDF files have long proven popular for invoices and other documents transacted during routine business. ZUGFeRD has the potential to … Read more

Article

January 2015 by Output Management for SAP and PDF/A

SAP’s product range includes a powerful document management system (DMS). Its wide range of structuring options bring order to document-based … Read more

Article

January 2015 by PDF Association staff
PDF Association logo
Visit PDF Association staff‘s profile.

Industries which exchange large volumes of documents with their customers – financial services, insurance, energy and others – are currently … Read more

Article

January 2015 by PDF Association staff
PDF Association logo
Visit PDF Association staff‘s profile.

Although PDF technology has enormous potential in mobile devices, tagged PDF is still ignored by screen readers on every mobile … Read more

Article

January 2015 by Duff Johnson
Duff Johnson
Visit Duff Johnson‘s profile.

A just-published report from the Australian government finds that PDF as a file-format is accessible but that PDF as supported … Read more

News

December 2014 by Duff Johnson
Duff Johnson
Visit Duff Johnson‘s profile.

The 2nd edition of PDF/UA is a minor revision, but what’s more exciting is that it conforms to PDF/UA!. Developers … Read more

News

December 2014 by Duff Johnson
Duff Johnson
Visit Duff Johnson‘s profile.

An overwhelming majority say that they learned readily applicable information, both from the sessions and one-on-one discussions.

News

December 2014 by Duff Johnson
Duff Johnson
Visit Duff Johnson‘s profile.

The Product Representation Compact (PRC) format for sharing 3D data with end users has been published as ISO 14739-1:2014.

News

December 2014 by PDF Association staff
PDF Association logo
Visit PDF Association staff‘s profile.

Naturally, many memory institutions use JHOVE’s PDF module on a daily basis for digital long term archiving. Learn about the … Read more

Article

December 2014 by PDF Association staff
PDF Association logo
Visit PDF Association staff‘s profile.

How can you benefit from PDF Day? Join IT managers and executives in Washington DC on December 10 and 11 … Read more

Article

Member News

WordPress Cookie Notice by Real Cookie Banner