Are you the kind of person who has always wondered how to tag a subtitle, or whether a Title in a PDF should be tagged as a Heading 1, or what to do with tags when a heading breaks across several lines?
Then you might want to check out the free webinar offered by the @PDFassociation on May 15.
Free Webinar – Techniques for Accessible PDF: Headings
https://pdfa.org/event/webinar-techniques-for-accessible-pdf-headings/
2/2
Last month, the @PDFassociation released their second set of "Techniques for Accessible PDF". This set focuses on Headings. [1]
The Techniques series provides pass/fail conditions for various tagging structures demonstrated in pared down sample PDF files. The first set covered 5 Fundamentals. [2]
[1] https://pdfa.org/techniques-for-accessible-pdf-headings/
[2] https://pdfa.org/techniques-for-accessible-pdf/
1/2
[1/2] Die zweite Präsentation bleibt beim Thema Barrierefreiheit und Ulrike Fischer zeigt einige unterschiedlichen Varianten um #TeXLaTeX nach #HTML zu wandeln.
Ein Ansatz, den ich zum Beispiel für das frühere Backend der @datenschleuder umgesetzt hatte, um epub mitzuliefern.
Es wird #tex4ht, #Pandoc, #LaTeXML, #lwarp und auch der Weg via #NGPDF (HTML aus den #TaggedPDF) gezeigt und verglichen.
[1/3] Der Freitag startet mit „Märchenstunde mit Frank [Mittelbach]“. Zuerst mit den Eingeständnis, dass es die Erkenntnis gebraucht hat wahrzunehmen, was wir mit den Dokumenten der letzen Jahrzehnten Personen, die auch #ScreenReader angewiesen sind „angetan haben“.
Er gibt allen, die sich bisher nicht Barrierefreiheit beschäftigt haben einen kleinen Einblick darüber was das bedeutet.
In case you missed it, a couple weeks ago the @PDFassociation published a web page listing "Tools for Accessible PDF".
There are two tables listing various tools along with columns for platform and license - one table for commercial, the other for free and/or open source. The lists include pretty much all the major vendors and tools, as well as a few that I didn't even know about (!).
The Techniques for Accessible PDF [1] from the @PDFassociation explain 5 (so far) "Fundamentals":
1: Basic Technical Rules
2: Text
3: Content
4: Logical Content Order
5: Appropriate Semantics
Along with some 40 example PDFs demonstrating either Pass or Fail conditions.
A background document provides some helpful detail on how to make use of the Techniques. [2]
[1] https://pdfa.org/techniques-for-accessible-pdf/
[2] https://pdfa.org/techniques-for-accessible-pdf-background/
Folks who rely on PDF standards may be interested in the "Techniques for Accessible PDF" published last week by the @PDFassociation.
It's a set of sample PDFs demonstrating pass/fail techniques for specific tagging cases.
I personally don't find the material very practical or easy to browse, but it's targeted more at technical implementation than practical tagging advice.
I expect the collection to grow in the future.
#PDF und #Linux ist ja eh ein spezielles Thema, aber kennt irgendwer ne Möglichkeit, PDF-Tags in Linux zu bearbeiten? Kenne in Windows den Adobe- und Axes-Kram, läuft aber nicht unter Linux.
Darf natürlich auch was kosten, Einmalkauf aber bevorzugt.
Ich selbst habe zwar Zweifel, aber vielleicht überrascht mich ja jemand 🤷
Here is a direct link to the "Standard Structure Elements" (PDF, 528 KB) from the PDF Association's site, so you can quickly just grab the cheat sheet on tagged PDFs. [1]
In their media release, the @PDFassociation provide additional details about the changes in the 2nd edition collection. [2]
Amongst other things, the new sheets are themselves better tagged for accessibility than the initial release.
[1] https://pdfa.org/download-area/cheat-sheets/StructureAttributes.pdf
The @PDFassociation has released a 2nd, expanded collection of PDF Cheat Sheets, which provide quick look-up tables and lists of key specifications.
This 2nd edition includes 5 new sheets, including one focused on tagged PDFs called:
Standard Structure Elements
This cheat sheet has handy tables of tags grouped by type (block level, inline, grouping, table, or list) and identifying differences between version PDF 1.7 and PDF 2.0.
More ISO standards on PDF accessibility are now available for free!
Today the @PDFassociation announced they are making three additional ISO standards - ISO 14289-1 (PDF/UA-1), ISO 14289-2 (PDF/UA-2) and ISO TS 32005 - available for download at no cost.
Big kudos to the PDF Association and to the following companies for making this possible: Allyant, Axes4, CDP Communications, and TargetStream Technologies.
https://pdfa.org/announcing-no-cost-access-to-pdfs-accessibility-standards/
1/6
The @PDFassociation has released PDF 2.0 "Errata Collection 2" - an updated version of ISO 32000-2:2020 which includes new comments and corrections.
Keep in mind that most software and assistive technology today continues to target the PDF 1.7 specification rather than PDF 2.0.
Like the April 2023 version, this updated July 2024 version is available free of charge thanks to the sponsorship of Adobe, Apryse, and Foxit.
https://pdfa.org/pdf-2-0-errata-collection-2-is-now-available/
Are you curious about PDF syntax?
Patrick Gundlach @speedata has a super-interesting blog series on PDFs. Each post is a technical deep dive into a particular aspect of PDF syntax using raw, working code examples.
This week's post looks at Tagged PDF and walks through how H1 and P tags would get coded into a simple PDF.
I've found the whole series does a great job introducing and simplifying the arcane, weird world of PDF syntax.
@julientaq @spaceninja Do you happen to know how well those might support PDF/UA or WCAG 2 standards for accessible PDFs? Anything that doesn't is a non-starter for me.
iText and PrinceXML both claim to support PDF/UA.
On the WeasyPrint site, they also claim to be able to produce PDF/UA compliant files. I wonder if anyone knows of examples I might look at?
I don't see any mention of accessibility in vivliostyle or paged.js.
The @PDFassociation includes some general notes on the differences between PDF/UA-1 and PDF/UA-2 on their website:
https://pdfa.org/iso-14289-2-pdfua-2/
The new PDF/UA-2 (ISO 14289-2) standard for accessible PDFs is available for EUR €179 / USD $195 / CAD $265 [1].
The provisions in PDF/UA-2 are identical to those provided by "Well-Tagged PDF" (WTPDF).
So most accessibility practitioners will probably want the free WTPDF standard along with the PDF 2.0 (ISO 32000-2) standard - also free from @PDFassociation, sponsored by Adobe, Apryse and Foxit [2]
[1] https://www.iso.org/standard/82278.html
[2] https://pdfa.org/sponsored-standards/
@annso @annso De plus, je sais que vous avez évité de mentionner Adobe…mais, pour le moment, il est quand-même possible d’utiliser leur service « d’auto-tag » - gratuitement, mais inscription obligatoire [1]. Ce service peut améliorer considérablement un PDF créé par Canva, par exemple.
[1] https://acrobatservices.adobe.com/dc-accessibility-playground/main.html
The @PDFassociation has released a new "Well-Tagged PDF" (WTPDF) specification to accompany the upcoming release of PDF/UA-2 (ISO 14289-2) expected later this month. You can download the WTPDF specification for free from the PDF Association [1]
Keen PDF fans will want to check it out. But bear in mind that few applications yet generate PDFs meeting this spec, and assistive technology doesn't yet process them differently.
