Is it possible to determine programatically whether a PDF is “tagged” (for accessibility)? I’m using PHP, and would like (if possible) to simply read a PDF file and return true if tagged, false if not.
I’ve looked at FPDF and TCPDF, but it isn’t clear to me whether either can extract this information.
In the official ISO PDF-1.7 specification (in the copy available for free from the Adobe website), I read on page 574:
To me that means…