PDF KNOWLEDGE LIBRARY
In-depth, source-linked guides for converting, organizing, securing, optimizing, and making PDFs accessible—written for real tasks, not search engines.
NIST's May 14, 2026 status report advanced nine additional post-quantum signature candidates while finalized standards such as FIPS 204 and FIPS 205 already exist. For signed PDFs, the immediate job is crypto inventory and interoperability planning—not inventing a nonstandard signature container.
Read article →ISO 14289-2:2024 defines PDF/UA-2 for accessible PDF 2.0, and veraPDF 1.30 added broader machine-check support in April 2026 before the 1.30.2 security patch in June. The useful workflow combines current automated validation with manual semantic and assistive-technology review.
Read article →PDF 2.0 Errata Collection 3 (EC3), announced June 18, 2026, replaces EC2 and incorporates 356 corrections as 766 edits to the ISO 32000-2:2020 bundle. The practical task is not to relabel files; it is to align implementations, test changed interpretations, and preserve reproducible evidence.
Read article →On August 19, 2026, the PDF Association published an industry specification that adds Brotli compression to PDF 2.0 through a new BrotliDecode filter. The announcement is important, but it is not a reason to rewrite every PDF today: reader support, archival policy, signing, and fallback behavior must be proven first.
Read article →A practical, standards-based guide to adding and preserving content provenance without overstating what credentials can prove.
Read article →A vendor-neutral workflow for using modern document AI without confusing searchable output, structured extraction, and verified truth.
Read article →A practical guide to the human-readable PDF, machine-readable invoice data, hybrid containers, and validation evidence finance teams now need.
Read article →Patch versions, event dates, validation steps, and safer document-handling controls after an actively exploited Acrobat vulnerability.
Read article →What the Justice Department's April 2026 deadline extension changes—and does not change—for state and local government PDF inventories.
Read article →A release-day field guide to testing LibreOffice 26.8 before using it for production PDF conversion, multilingual documents, and Office-file exchange.
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