[thesebas]

In chrome I can even link to https://labs.pdfa.org/FragmentTest.pdf#Back%20to%20lower%20l... but can't see where spec allows for that.

[bradrn]

It’s not part of the spec, apparently, but Adobe discusses it at https://helpx.adobe.com/acrobat/kb/link-html-pdf-page-acroba....