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No excuses: Brotli compression advances PDF

The PDF Association is proud to announce a groundbreaking update for the PDF ecosystem: the official industry specification for Brotli compression in PDF 2.0! As digital documents grow in complexity, the demand for high-performance, efficient, and modern compression has never been greater.

Brotli is the new gold standard for lossless compression, offering significantly superior compression compared to traditional filters like Flate and LZW. Brotli is a patent-free, open, and IETF-standardized solution, ensuring seamless interoperability across the industry. Supported by leading OSS projects and already embraced by industry innovators, Brotli represents a major leap forward for PDF.

PDF Association staff

By PDF Association staff
August 2026

No excuses: Brotli compression advances PDF


The PDF Association is proud to announce a groundbreaking update for the PDF ecosystem: the official industry specification for Brotli compression in PDF 2.0! As digital documents grow in complexity, the demand for high-performance, efficient, and modern compression has never been greater.

Brotli is the new gold standard for lossless compression, offering significantly superior compression compared to traditional filters like Flate and LZW. Brotli is a patent-free, open, and IETF-standardized solution, ensuring seamless interoperability across the industry. Supported by leading OSS projects and already embraced by industry innovators, Brotli represents a major leap forward for PDF.

PDF Association staff
By PDF Association staff
August 2026
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Featured articles

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The PDF Association has published two new PDF/UA-1 Technical Notes on the Use of ActualText on Figure structure elements and … Read more

PDF Association news

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PDF isn’t inherently a problem for AI – the real challenge is how documents are ingested. Boris Doubrov explains why … Read more

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For twenty years, the logical structure inside a tagged PDF served one audience: assistive technology. Then the main reader of … Read more

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Recent articles

Informative (non-commercial) articles by PDF Association members and staff.

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PDF/A is an ISO-standardized version of PDF designed for the long-term preservation of electronic documents. It helps ensure documents remain … Read more

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From the PDF/A Competence Centre to the PDF Association: two of the founders on how it all started.

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Discover how R users can incorporate PDF accessibility checks into reproducible reporting workflows for more accessible documents.

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Learn how PDF standards have evolved from basic document sharing to supporting accessibility, compliance, security, and long-term preservation. Explore PDF … Read more

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PDF tags are the foundation of accessible documents, giving structure and meaning to content so assistive technologies can interpret it … Read more

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HMRC has confirmed the UK’s 2029 e-invoicing mandate will run on Peppol, with PDFs excluded by definition. Weeks from now, … Read more

News from the PDF Association

Announcements, publications, events and other updates.

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The PDF Association has published two new PDF/UA-1 Technical Notes on the Use of ActualText on Figure structure elements and … Read more

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We remember a PDF Association co-founder and former Board chair.

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The PDF Association announces the publication of its specification for Brotli compression in PDF.

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How can content and information be extracted from PDF documents using AI applications, such as large language models (LLMs), and … Read more

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PDF 2.0, Errata Collection 3 (EC3) is a complete replacement for the previous Errata Collection 2 (EC2).

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PDF Association Working Group chairs share their reflections on Global Accessibility Awareness Day 2026.

News from PDF Association members

PDF Association members post updates on their software and services.

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UPDF offers new resources for real-estate how agents, brokers, and property teams so they can review disclosures, compare offers, digitize … Read more

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The new PDF to PostScript API Tool gives print, prepress, and publishing teams a configurable way to generate production-ready PostScript … Read more

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JPedal now validates PDF structure against the Arlington PDF Model, helping identify errors that may not be visible when a … Read more

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Foxit PDF Editor 2026.2 introduces Foxit AI Workspace and an on-device AI Assistant with Bring Your Own Model support, alongside … Read more

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The release introduces improvements to accessibility and keyboard navigation, error visualization, validation accuracy, localization to Korean language and application stability.

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The AI-powered PDF editor earns 12 G2 badges while expanding its role as a practical document platform for users worldwide.

Members‘ case studies

PDF Association members‘ case studies showcase implementations of PDF technology in daily business operations around the world.

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Telekom MMS integrates digital accessibility directly into document creation. With axesWord, employees can independently create accessible documents and efficiently meet … Read more

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Wisconsin-based ABT Mailcom transformed its mail production with the Solimar Chemistry Platform, delivered with Hansen360 and RISO. File processing dropped … Read more

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Lulu uses callas pdfToolbox as part of a two-stage process. First, a quick validation step verifies basic properties such as … Read more

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callas pdfToolbox becomes a production composition and decision-making engine at Billboard Media.

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How PDFix uses callas technology to deliver reliable PDF/UA compliance.

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How Continual Engine helped a leading financial services organization scale accessible PDF remediation across complex document workflows while improving efficiency, … Read more

Members‘ white papers

PDF Association members‘ white papers inform their customers, partners and suppliers with technical or marketplace education, insights into their philosophy, solutions and technologies.

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Most enterprise AI initiatives are failing not because of the model — but because of the document. This whitepaper examines … Read more

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Ryan McAbee and Pat McGrew share their thoughts on relevant Keypoint Intelligence research during this Solimar-sponsored webinar.

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The digital-first approach in document creation enables the uncomplicated, fast switch between paper-based and digital communication.

PDF in the Wild

Our (occasionally lighthearted) monthly post covering items of interest to PDF’s technical community.

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C’mon, AI – PDF isn’t just about text! | Supports just 2 of 4 operators? That’s not a PDF parser! … Read more

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PDF should not be your “tokenpocalypse” | LibreOffice comes out swinging for open formats | Android Auto brings PDF “reading” … Read more

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Porcelain PDF | That’s one way to burn AI tokens! | Big Tech adds support for accessible math according to … Read more

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EAA gets PDF/UA | ISO TC 42 publishes HDR standard | Google’s Gemini now creates PDFs, but … | PDF … Read more

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PDF Week London 2026 is almost here! | veraPDF 1.30 released | PDF is trending on GitHub | PDF/UA-1 gets its … Read more

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German government standardizes on PDF/UA | ISO/IEC committee starts work on a vocabulary for authenticity | Chrome adds ink (not … Read more

PDF in the News

When PDF files feature in the news, we’ll offer our take.

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We report on the technical aspects of the PDF files released by the US Department of Justice in connection with … Read more

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A controversial PDF tied to Hunter Biden highlights key digital forensics issues: PDFs are representations, not originals, and without metadata … Read more

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“I’m sorry, Derek, but, now that Kelsey has learned how to convert JPEGs into PDFs, we can’t justify keeping you … Read more

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A poorly scanned PDF of Trump’s Ukraine call shows the risks of print-based workflows. Dirty scans, weak OCR, and missing … Read more

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After an impressive effort the Mueller Report is now available as a free EPUB file. What might it have been … Read more

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The DoJ quietly reposted the Mueller Report. We analyze their repost, noting the changes (from a PDF perspective).

PDF Association news for members

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Based on feedback received, we are replacing the previous email listserv with GitHub Discussions, which allows usage by email while … Read more
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PDF Association members can now add contact details and social links to their profile, making author connections and networking easier.
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The PDF Association supports interoperability by sharing extensions and declarations via GitHub, inviting members to contribute standardized, machine-readable data.
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Gain insights into the PDF marketplace via this exclusive report.
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The PDF Association is launching a new benefit specifically designed for Individual members.
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This recently published report from ISO/IEC JTC 1 SC 34 presents an analysis of related standards, the current status and … Read more

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