What the title says. I know PDFs exported from Google Docs are version 1.4, but which versions does it support when viewing PDFs?
I'm asking because I'm having problems with PDFs generated with the PHP TCPDF library, which uses the latest version of the PDF standard (1.7). Namely, when viewed in Google Docs, these PDFs are missing some text - sometimes all bold or italic text, sometimes all regular text while bold and italic render fine.
For instance, take a look at the following PDF: https://docs.google.com/open?id=0B-zxKExddZ1-S1M0NHhVQWExZms
The first row should say "freesans regular", but the text is missing (or actually is rendered in white and thus invisible). Other PDF programs like Adobe Reader and Foxit Reader show the text correctly.
Also, compare with this PDF: https://docs.google.com/open?id=0B-zxKExddZ1-SVI1aDU0V2c4Vmc
It's the same content, only saved with Word 2007, which uses PDF version 1.5. All text renders correctly, which leads me to believe that perhaps Google Docs doesn't support the latest PDF standards. Anyone know if that's the case?