Ross, Your reply caught my eye, and I am now looking at the pdfx package documentation.
May I ask, if accessibility is a concern, why a-2b/-2u rather than -ua-1, which seems directly targeted at this? Many thanks, K > You should use the pdfx package and prepare for PDF/A-2b or -2u. > This fixes many of these things that affect conversions, as well as > Accessibility and Archivability. > > It's not fully tagged PDF, but handles many other technical issues. >