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Featured articles Discover pdfa. org Key resources Get involved Home of the worldwide PDF technical community Featured News Brotli compression coming to PDF More Featured News Coming in September a PDF Triathlon in Berlin. The PDF Association will host a trio of PDF technology events in Berlin from September 1119. Save the date and check out Read more Launching the Cryptography and Provenance TWG The new TWG will explore topics such as verifiable credentials digital signatures modern cryptography and content provenance frameworks in alignment with the Read more Articles and PDF Association News When will AI understand document semantics.