[NTG-context] Re: upload

[Hans Hagen <j.hagen@xs4all.nl>]

On 2/14/2025 4:50 PM, Pablo Rodriguez via ntg-context wrote:
> On 2/14/25 11:57, Steffen Wolfrum wrote:
>>> Am 14.02.2025 um 11:36 schrieb Steffen Wolfrum <context@st.estfiles.de>:
>>> […]
>>> Does that mean that this example should provide the urgently
>>> desired alt-text:
>>> […]
>>> Really?! If so, I will send it to the publishers so they can check
>>> if it fulfills their needs.>
>> I just received the feedback from the publishers: there is no
>> alternative text in this example.
> 
> Hi Steffen and Hans,
> 
> there is no alternative text in the PDF code because of lpdf-ini.lmt:
> 
>     local f_actual_text     = formatters["/Span <</ActualText %s >> BDC"]
> 
> -  local f_alternative_text  = formatters["/Span <</AltText %s >> BDC"]
> +  local f_alternative_text  = formatters["/Span <</Alt %s >> BDC"]
> 
>     local s_actual_text_e     <const> = "EMC ET"
> 
> The PDF key name is "Alt"
> (https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/PDF32000_2008.pdf#page=567),
> from PDF-1.3
> (https://github.com/pdf-association/arlington-pdf-model/blob/master/tsv/1.3/StructElem.tsv)
> to the latest version
> (https://github.com/pdf-association/arlington-pdf-model/blob/master/tsv/latest/StructElem.tsv).
> 
> There seems to be no "AltText" key in the PDF specification, afaIk.
> 
> Besides other questions related to the accessibility directive, it would
> be great to fix this issue.

As you tested viewers before, can you check which ones do something with 
Alt and/or ActualText at all?

Hans

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