A couple months ago (sad but true), Fabrice passed on (https://mailman.ntg.nl/pipermail/ntg-pdftex/2016-January/004066.html) the report from Denis (https://groups.google.com/forum/#!topic/comp.text.pdf/ZnobgbiiDZ4) that pdftex creates pdfs with "No document catalog dictionary" and this fails jhove validation. But then, running the pdf through pdftk these.pdf output valid-these.pdf makes it pass. More details and a test document apparently at http://tex.stackexchange.com/questions/79947 Except that report implies that maybe this is about the EOL silliness that was fixed a couple years ago? So, Denis, can you confirm that pdftex from TL'15 still does not generate good pdfs for you? (I imagine you are using the latest pdftex, but just in case ...) Anyway, can someone compare the pdftex result with the pdftk result and discern the actual difference? (Sorry, I'd do it myself but I'm going to be away for a couple of days and time is getting short for TL'16.) Thanks, Karl