Check the properties of the PDF documents!
Some of them made their PDFs completely safe & non-editable!
Even you can make the PDF's non printable also, options are their in acrobat itself!
All that depends upon the PDF creator & what reason they are created for!
Check the properties of the PDF documents!
Some of them made their PDFs completely safe & non-editable!
Even you can make the PDF's non printable also, options are their in acrobat itself!
All that depends upon the PDF creator & what reason they are created for!