I am checking for font encoding errors in PDF documents using gs(ghost script) with the following command to be confident that i will not be missing any text.
gs -o output.pdf -sDEVICE=pdfwrite -dPDFSETTINGS=/prepress "my_pdf.pdf"
If pdf have errors have i am getting the following message.
**** This file had errors that were repaired or ignored. **** The file was produced by: **** >>>> Winnovative HTML to PDF Converter 11.3 <<<< **** Please notify the author of the software that produced this **** file that it does not conform to Adobe's published PDF **** specification
But problem with gs is it too long time(2400 secs to 3000 secs) for some documents(~300 page). Is there any way to make it fast or some other tool to check font errors fast?