When displaying the table of contents of a PDF document, some applications choose to expand all levels (e.g. Firefox), while others only display the first level (e.g. Preview).

Is it possible to specify that only the first level is to be displayed for all applications?

Firefox


Preview

1. firefox.png‎ 335.2 kB
2. preview.png‎ 222.6 kB
3. toc-problem.html‎ 0.3 kB
4. toc-problem.pdf‎ 15.6 kB

Edited 17 Nov 2023 by nico

You can apply the -prince-bookmark-state property to the heading:

https://www.princexml.com/doc/css-props/#prop-prince-bookmark-state

Unbelievable, it works!

* { bookmark-state: closed }

Thanks a lot Mike!