Featured articles

Image of Brotli compression coming to PDF

Brotli compression coming to PDF

Coming in September: a PDF Triathlon in Berlin!

Launching the Cryptography and Provenance TWG

Discover pdfa.org

Review publications from the PDF Association and ISO
The technical index lists critical resources for developers
Learn which companies are PDF Association members
Review hundreds of presentations from our events

Key resources

Try the new VS Code extension for PDF syntax
Check out our cheat sheets for PDF developers
Get PDF’s latest specification, ISO 32000-2 at no cost
Add ISO 32000-2 errata via our public GitHub repo, and check out the resolutions

Get involved

Discover the benefits of PDF Association membership
Join the PDF Association!
Review the PDF technical community’s working groups

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.

Explore membership benefits

Explore membership benefits

ISO 32000 bundle is now updated!

ISO 32000 bundle is now updated!

Become a Member!

Become a Member!

Brotli compression coming to PDF

March 2025 by Peter Wyatt, Robin Watts

In October 2023, the PDF Association launched a public request for stakeholder feedback on aspects of PDF that could be usefully updated.

We explored various subjects at that event, including HDR, new color capabilities, new font technology, animation, accessibility, new 2D and 3D graphical formats, and improved compression methods. Although several of these are under active development today in the PDF Association’s Imaging Model TWG, this article deals with a new method for optimizing PDF file size.

Brotli, a compression algorithm developed by Google engineers, was originally intended for web use, and is broadly adopted in web browsers. When implemented in PDF Brotli compression can offer significant reductions in file-size. Learn more!

Member News

Next

Crawford Technologies’ New Digital Transform Engine Version 5.8 Offers Key Upgrades for High-volume Communication Workflows

April 2025, Crawford Technologies Inc.

Crawford Technologies announces the release of Version 5.8 of its Digital Transform Engine (DTE). DTE 5.8 offers key upgrades that … Read more

Superace’s UPDF Excels in G2 Spring 2025 Reports with 14 Badges and Top Rankings

April 2025, Superace Software Technologies Co., Ltd.

Superace’s UPDF excelled in the G2 Spring 2025 Reports, earning 14 badges and top rankings, including the fourth position among … Read more

Durst Group Acquires callas software – Paving the Way for an Open Printing Industry

April 2025, by Sarah Nitschmann, callas software GmbH

The Durst Group announces the acquisition of callas software.

BuildVu’s Latest Update: Now compatible with Java 24!

April 2025, IDRsolutions

BuildVu’s latest release enhances compatibility with Java, refines logging, and resolves key issues to ensure more accurate rendering, better debugging, … Read more

UPDF Celebrates Three Years: Embracing a Paperless Future with Global Users

April 2025, Superace Software Technologies Co., Ltd.

UPDF is celebrating its third anniversary by reaffirming its commitment to a sustainable, paperless future. UPDF has evolved from a … Read more

PDFix and OpenAI: Transforming PDF Accessibility Through Automation

March 2025, PDFix

Boost PDF accessibility with AI-powered automation! PDFix now leverages OpenAI to generate alt text, create structured table summaries, and convert … Read more

WordPress Cookie Notice by Real Cookie Banner