Frequently Asked Question:
Check to see if a PDF has been tagged
Are there any features in Quick PDF Library that will let you check to see if a PDF has been tagged?
No, Quick PDF Library doesn't include any tagged PDF related features at the moment. It's not currently possible to check if a PDF has been tagged and it's not possible to create a tagged PDF.
However, it is possible to parse a PDF file yourself and look for the "/Marked" entry to see if it has a has a boolean value of true or false. A value of true indicates that the file is a tagged PDF and a value of false indicates that it is not.