On 9/22/24 13:15, Hans Hagen via ntg-context wrote: > On 9/21/2024 7:16 PM, Steffen Wolfrum wrote: >> Hi, >>>> as publishing houses (at least in Germany) are forced to provide >> «alt text» with their PDF-publications (from June 2025 on),
Hi Steffen and Hans, this will be a requirement for the whole European Economic Area. This is where the Accessibility Directive should be applied. Since this may not be the single requirement, I started a new wiki page for that: https://contextgarden.net/Accessibility. Please, feel free to contribute (as ever). >> What is the equivalent in ConTeXt LMTX? > > afaik there no such tag on an image in pdf so one has to wrap, i'll add Alternate descriptions are covered in https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/PDF32000_2008.pdf#nameddest=G13.2262140. From what I see in the sample, they are very similar to /ActualText, but with /Alt instead (related to a marked section). They are applied to all items that have no direct text translation, such as images or formulas (to alternatively describe them in text). > \startPDFalternativetext{when will the german government provide > full acrobat for free (livelong) to developers} > \scale[s=3]{\rotate[rotation=30]{DE}} > \stopPDFalternativetext > > to play with but integrating something more nice also will b emore > confusing ... the problem is that anything can be an image (liek a mp > picture) I think this is great, since this allows it to be applied as allowed by the PDF spec. Also for the expansion of abbreviations, /E is provided for marked sections (https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/PDF32000_2008.pdf#nameddest=G13.2260327), the same way as /ActualText (but it expects whole words). It would be great to have synonyms added the /E information by default. I think this may be a requirement for text-to-speech conversions. Many thanks for your help, Pablo ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___________________________________________________________________________________
