Re: Bookmarks corrupted under pdf/ua-2

Hi,

On Tue, 16 Jun 2026 at 18:47, Steffen Wolfrum <[email protected]> wrote:
>
> As I need to produce tagged PDF I am using \setupbackend[format={pdf/ua-2}]
> The tagged PDF is great.
>
> Only the bookmarks are corrupted when non-ASCII is used:
>
>
> \setupinteraction[state=start]
>
> \setupbackend[format={pdf/ua-2}]
> %\setupbackend[format={pdf/ua-1}]
>
> \placebookmarks[chapter][]
>
> \starttext
>
> \chapter{Äpfel – Öl}
>
> \stoptext
>

The reason there is a change is not the tagging per se, but that one
goes into pdf 2.

After reading in the pdf 2 spec again, we cannot find that one shall
not be allowed to use utf8 in bookmarks (outlines). We checked a few
readers, and it works in firefox/chrome/mupdf(newer)/sumatra, but not
in the poppler(?) based ones okular/evince/xpdf. Luckily there is a
way to disable the utf8 string:

\disabledirectives[backend.pdf.utf]

By the way according to tagging-basic.pdf (in the distribution) you could try

\setuptagging[state=start,preset=basic,option=interaction]

with option=interaction only since you enable interaction. Beware,
links and tagging don't play too well together...

/Mikael
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