Duff Johnson

"If it didn't exist, we'd have to invent it" -- good last line from @DuffJohnson's celebration of PDF's 30th anniversary last week. We use PDF without thinking about the hard work it takes to create and maintain a standard so that…lnkd.in/eYewhDcv lnkd.in/eX-qzewD

Google has restored creation of Tagged PDF to Chrome. We have yet to check out the output in detail, but it looks promising! pdfa.org/chrome-adds-su… #accessibility

@ghenry @petervwyatt @seradio It was a good conversation; thanks, Gavin!

Great fun chatting with @petervwyatt and @DuffJohnson for @seradio back in August about the 30 year history of #PDF and various other things. Have a listen now! se-radio.net/2022/10/episod… #ISO32000 #ISO14289 #PDFUA #PDFA #PDF #Adobe #Swift #Go #Apple #veraPDF

.@SEradio, a podcast for professional software developers, has just posted an interview with the PDF Association's CTO @petervwyatt and CEO @duffjohnson. pdfa.org/se-radio-inter…

@PDFAssociation I'm looking forward to seeing many of my #PDF friends in Berlin!

#PDFDaysEurope2022 starts just two weeks from today! You can attend in-person or remotely. Have you registered yet? pdfa.org/pdf-days-start…

Check out the keynote presentations for PDF Days Europe 2022! Descriptions are now posted! #pdfdayseurope2022 #pdf pdfa.org/pdf-days-keyno…

.@xkcd understands #PDF’s value proposition... xkcd.com/1909/

Summer Special! Until July 20 get a 33% discount on PDF Days Europe 2022 in Berlin! pdfa.org/agenda/pdf-day…

@Global_Graphics' Martin Bailey surveys two decades of PDF/X, from the early days of PDF to dominance of high-end #print sectors. #PDFX pdfa.org/the-route-to-p…

@thomasafine @PDFAssociation Sorry, I just saw this. I read the thread but wasn't clear as to your question...

Just going to tag @DuffJohnson here since he's one of the authors from @PDFAssociation of that Hunter Biden pdf analysis I linked to above.

Naturally with Hunter emails back in the news I'm going to... pivot to Kavanaugh. Bear with me here...

The PDF Association recognizes today, the 10th anniversary of Global Information Governance Day (#GIGD) by noting the significance of #PDF technology to IG. pdfa.org/why-pdf-matter…

@PDFAssociation A must-read for #PDF developers...

Peter Wyatt explains UTF-8 in PDF 2.0, and highlights the need for effective support of this feature in modern PDF viewers. #unicode pdfa.org/understanding-…

@PDFAssociation @Adobe @Acrobat Another great article on PDF technology by @PDFAssociation CTO @petervwyatt!

It's 20 years since @Adobe introduced partial transparency as a native feature into PDF 1.4 - possibly the most significant technical change in PDF's history. Now you find PDF blend modes in SVG, CSS and even Apple SwiftUI! #pdf @Acrobat pdfa.org/20-years-of-tr…

Almost every #email client can save messages as PDF files, but none do so in a manner that retains email structures or metadata proving message authenticity. The EA-PDF development effort will explore a better way. pdfa.org/announcing-the…

@PDFAssociation @pdfsage This will be an interesting session for those thinking about content authenticity. #C2PA

How does #C2PA intersect with #PDF technology? Register for @pdfsage's presentation at PDF Days Online 2021 to find out! pdfa.org/presentation/c…

“#Accessibility is a job for standards.” @DuffJohnson @Standards4SDGs #WorldStandardsDay pdfa.org/?p=77705

#PDF Days Online 2021 continues next week with FREE webinars on PDF/A, #archiving #email, #OSS, #3DPDF, press optimization (#print), #document #security and #accessibility! Whew! #pdfdays pdfa.org/pdf-days-onlin…

PDF Days Online 2021 starts next Monday! Join the world’s top PDF experts as they discuss PDF technology over the next month. Check out the agenda and signup now! pdfa.org/pdf-days-onlin… #pdfdays

PDF Association CTO Peter Wyatt will discuss the Arlington PDF Model developed in conjunction with DARPA's SafeDocs program at PDF Days Online 2021. #pdfdays #parsing #cybersecurity pdfa.org/presentation/t…

INTERVIEW: Duff Johnson, CEO of PDF Association offers a preview of his introduction to PDF Days Europe 2021, coming this September 27-29 to Berlin! #pdfdays pdfa.org/?p=70812