add bookmarks to PDF exported file

[Erwan-le-Gall]

label: accessibility

When I create a Docs document with headers

Then the resulting exported PDF document must have an outline of bookmarks based on these headers

reference: https://opensource.adobe.com/dc-acrobat-sdk-docs/pdfstandards/PDF32000_2008.pdf#page=375

This is an accessibility requirement for WCAG and RGAA compliance.

[Erwan-le-Gall]

ping @cyberbaloo

[virgile-dev]

Hey @Erwan-le-Gall
Thanks for opening all those accessibility related issue?
Do you think you could contribute and work on fixing a few?
@AntoLC should be able to review them during the summer.

[Erwan-le-Gall]

I'm no more a dev… :(

But I think the answer is in React-PDF's documentation: https://react-pdf.org/components#document :

• bookmark Attach bookmark to element
• useOutlines Document bookmarks visible

There's an example code in https://react-pdf.org/advanced#bookmarks

Docs should have such bookmark attributes defined on headers.

ping @AntoLC we can have a talk about it and I can test a generated PDF and give you feedback