PDF/UA support improvement

This issue is for grouping PDF/UA features requests and bugs.

If you’d like to have a new feature regarding PDF/UA properties or encounter an issue related to PDF/UA, you can check here if an issue isn’t already opened. If not, please open an issue and we’ll link it there :)

• Validate PDF/UA documents in CI – #2496
• Use valid order for PDF drawing commands when drawing SVGs, as PAC complains – #2533
• Fix structure of tables – #2508
• Add year in PDF/UA-2 metadata – #2769
• Add namespace to Document tag in PDF 2 – #2770
• Set alternative text for inline SVGs – #2816
• Link the internal anchors destination to structures, not to coordinates
• Support nested tags in anchors – #185
• Don’t split structure for elements displayed on multiple pages – #2903
• Use better PDF tags for <figure>
• Use better PDF tags for <dl>
• Remove useless PDF Span tags that PAC complains about
• Avoid useless empty anonymous blocks, for example when list items are displayed as inline – #2504
• Support aria-* attributes – #2550