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New Application Note Illuminates PDF’s Flexible Options for Custom Metadata

October 2025 by PDF Association staff

The PDF Association has released a new Application Note titled “Including Custom Metadata Structures in PDF.”

This document addresses the need for organizations to use custom metadata beyond standard XMP schemas in their PDF workflows. It provides guidance on designing custom metadata schemas, embedding them interoperably, best practices for versioning and extensibility, and strategies for exposing metadata to applications and tools.

The document’s objective is to enhance interoperability and efficiency by allowing custom metadata to travel seamlessly within PDF documents, eliminating the need for separate “sidecar files.”

The Note is now available on the PDF Association website.

The PDF Association has released a new Application Note titled “Including Custom Metadata Structures in PDF.”

This document addresses the need for organizations to use custom metadata beyond standard XMP schemas in their PDF workflows. It provides guidance on designing custom metadata schemas, embedding them interoperably, best practices for versioning and extensibility, and strategies for exposing metadata to applications and tools.

The document’s objective is to enhance interoperability and efficiency by allowing custom metadata to travel seamlessly within PDF documents, eliminating the need for separate “sidecar files.”

The Note is now available on the PDF Association website.

How to optimally prepare PDF files for variable data printing

December 2022 by Dietrich von Seggern (callas software GmbH)
Article


Dietrich von Seggern from callas software explains, how companies can optimally prepare PDF files for variable data printing.

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December 2022 by PDF Association staff
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Adobe releases the source code for an early version of PostScript, the forerunner of PDF.

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November 2022 by PDF Association staff
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DARPA will provide seed funding of $1.3M for research and prototyping centered on reinventing the PDF specification and delivering on … Read more

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November 2022 by PDF Association staff
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Our all-new presentation archive now includes recordings from PDF Days Europe 2022!

PDF Association news

November 2022 by PDF Association staff
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Impressions of the PDF Days Europe 2022 in September in Berlin at the Novotel Tiergarten. Images of several keynotes, sessions, … Read more

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October 2022 by Duff Johnson
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As of October 28 2022 worldwide searches for “pdf” had peaked in March, 2022. Even as internet searches continue to … Read more

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October 2022 by PDF Association staff
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In a new podcast episode, SE Radio’s Gavin Henry interviews PDF Association CTO Wyatt and CEO Johnson about a wide … Read more

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October 2022 by Dietrich von Seggern (callas software GmbH)
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Some time ago Adobe announced that it “will disable support for authoring with Type 1 fonts by January 2023”. Dietrich … Read more

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September 2022 by PDF Association staff
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Following PDF Days Europe, the PDF Association’s annual All-Member Meeting met in Berlin on September 13, 2022 to hear the … Read more

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September 2022 by Duff Johnson
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PDF Days Europe 2022 was a great success, with the overwhelming majority of attendees reporting a high degree of satisfaction.

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September 2022 by PDF Association staff
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The PDF Association publishes new guidance to aide in optimizing PDF files for maximally-efficient rendering and print.

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