#Find dpi of pdf in powerpdf upgrade
I vetod the PDF 8.1 upgrade to anything including PDF Cloud connection and I have had zero problems since. Again, I uninstalled PDF 8.1 and reinstalled it and it worked fine with Windows 10. To solve the problem, words that contain ligatures need to have an ActualText tag that spells the word out as-is in text. PDF then did an Office 2013 upgrade and PDF 8.1 reverted to 'stopped working' msg and the program closes. The problem I see is that the treatment of ligatures is so very deep inside TeX itself. Those ligatures on which Knuth spent so much effort come across as an unreadable character in a PDF document generated by LaTeX. This one might well be the toughest challenge of all. This is exactly how makes the mathematical equations in some wikipedia article accessible. My thought is to capture the LaTeX code used to make the equation as the alternative text.
"Professional" tables that use \multicolumn to conjoin columns, extra vertical space to separate items in a table, etc., are visually appealing but are not quite as accessible as plain old vanilla tables. Whether the table is overly-tuned for sighted readers.The mechanism used to create the table: Are the tables typeset by painting the cell contents at a certain place on the page or are they typeset using some construct? (I don't know how pdflatex generates tables.While the LaTeX machinery obviously cannot provide that explanatory text, it should provide the authoring tools that enable a document author to provide an alternative explanation. Another is to provide some alternative text (PDF and HTML both have alternative text capabilities) that somehow make the graphic accessible. One way of making a graphic accessible is to provide an adequate description of the graphic in the main body of the document. Graphics are inherently inaccessible as-is. The challenges in making a document accessible are It is too long and too heavily formatted to fit in as a comment. This is not so much an answer to my question as it is a refinement of what needs to be done.