basic metadata:
page count
file size
creation and modification dates
PDF version (including Version entry in the document catalog)
producer and creator
encryption information and permissions
annotations
presence of interactive forms
presence of optional content layers
presence of digital signatures
image only (scanned) pages
Tagged PDF information:
stats on the use of structure element types
logical structure tree validation against ISO 32005
Comments
What methodology did you use?
For each PDF we extracted:
basic metadata: page count file size creation and modification dates PDF version (including Version entry in the document catalog) producer and creator encryption information and permissions annotations presence of interactive forms presence of optional content layers presence of digital signatures image only (scanned) pages Tagged PDF information: stats on the use of structure element types logical structure tree validation against ISO 32005