[HN Gopher] LaTeX is the first PDF/UA-2 compliance accessible PD...
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LaTeX is the first PDF/UA-2 compliance accessible PDF producer
Author : anewhnaccount2
Score : 74 points
Date : 2024-06-05 17:39 UTC (2 days ago)
(HTM) web link (github.com)
(TXT) w3m dump (github.com)
| leni536 wrote:
| Is this pdf standard freely accessible? How widely supported even
| PDF 2.0 is?
| nullindividual wrote:
| It is free - https://pdfa.org/announcing-no-cost-access-to-
| iso-32000-2-pd...
| anewhnaccount3 wrote:
| It's very early days for clients. I guess the support is not
| really there yet. However most publishers and eprint archives
| have settles on pdfs rather than html annoyingly, so this is
| one of our best hopes of accessibility for academic
| publications.
| skadge wrote:
| Is texlive 2024 producing tagged PDF out of the box? That would
| be awesome! If not, is there somewhere some
| instructions/tutorials explaining the steps to follow?
| elashri wrote:
| > Is texlive 2024 producing tagged PDF out of the box?
|
| Not yet. There is Tagged PDF project [1] which aims to do
| something like that. there is tagpdf [2] package that try to do
| some of these things. If you need good instructions I would
| suggest overleaf tagging tutorial [3].
|
| [1] https://www.latex-
| project.org/publications/indexbytopic/pdf/
|
| [2] https://ctan.org/pkg/tagpdf
|
| [3]
| https://www.overleaf.com/learn/latex/An_introduction_to_tagg...
| anewhnaccount3 wrote:
| No, but it's getting easier and easier. To opt into this
| testing stage functionality you need to add a few tags, and may
| eventually have to work around some package incompatibilities.
| Take a look at https://www.latex-
| project.org/news/2023/03/13/latex-dev-1/ for more info.
| oriettaxx wrote:
| can somebody explain?
|
| I already can create PDF from latex, what does this repo add to
| it?
| anewhnaccount3 wrote:
| In the future better accessibility for screen readers of text
| (paragraph breaks), images (alt text), tables (control of
| reading order), and math formulae. It's up to the pdf readers
| too though.
| lxgr wrote:
| PDF/UA makes PDFs accessible, which can otherwise be very hard
| to parse for screenreaders or display software that wants to
| reflow them (e.g. for reading them on small displays).
|
| Without special hints (that are ignored by regular PDF readers
| or printers), PDF is essentially a vector graphics format, and
| any of these tasks amount to an exercise in OCR.
|
| This is a somewhat little-known fact about PDFs, since many
| viewers do in fact implement many of these OCR-like heuristics
| to provide features such as text selection, search etc. that
| make it look a lot like a text-based format, but it really is a
| vector graphics format at heart. PDF/UA makes this a bit
| easier.
|
| As an example, consider a multiple column layout, as is often
| used in scientific articles. PDF-creating software not
| concerned with accessibility might just intersperse all columns
| line by line (i.e. present text in _presentational_ left-to-
| right, top-to-bottom fashion), but it could just as well
| achieve the same outcome by drawing column by column in
| _semantic_ order. Beyond encouraging that, I believe PDF /UA
| also defines a bunch of (invisible) metadata tags that readers
| can use to figure out semantic structuring of a document.
| ThePowerOfFuet wrote:
| > At the present time we are not distributing the modified TeX
| sources that generate these tagged examples
|
| Why not?
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(page generated 2024-06-07 23:00 UTC)