Gunnerp245
02-03-2009, 09:01 PM
How does one know whether a PDF file has DRM?
Gunner...
Gunner...
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View Full Version : PDF DRM how do you know? Jim Lester 02-03-2009, 09:38 PM If you can open the PDF in Adobe Reader, go to Document Properties, security tab and look at "Security Method" if it says anything besides "No Security", it is encrypted (and DRM protected) using the named Security handler. Note: Adobe currently provides 4 security handlers (Password, Certificate, Live Cycle, and eBooks), and there are a multitude of 3rd party security handlers. If you cannot open it in Adobe Reader, assuming it is a valid non corrupt PDF file, it is probably DRM protected. If people are interested, I can give the true Geek answer of how to walk the PDF structure in a text editor to find out all of this information. desertgrandma 02-03-2009, 10:10 PM How does one know whether a PDF file has DRM? Gunner... Hello, Gunner, and welcome to MobileRead. As you can see, we have knowledgeable people here, stick around and you'll learn lots more! HarryT 02-04-2009, 04:53 AM If you're asking how you can tell at the time you buy the book, it will, if it has DRM, generally be described as "Secure PDF" in the eBook store. daesdaemar 02-04-2009, 04:46 PM If people are interested, I can give the true Geek answer of how to walk the PDF structure in a text editor to find out all of this information. I would love to know this... Knowledge is power... Jellby 02-05-2009, 04:58 AM Use "pdfinfo", it comes with poppler in my linux: $ pdfinfo dantesinferno00dantuoft.pdf Producer: Recoded by LuraDocument PDF v2.28 CreationDate: Thu Dec 6 09:34:21 2007 ModDate: Thu Dec 6 10:11:03 2007 Tagged: no Pages: 372 Encrypted: no Page size: 640 x 912 pts File size: 37026003 bytes Optimized: yes PDF version: 1.5 Gunnerp245 02-07-2009, 12:13 PM Thanks to all! Gunner... :thumbsup::thanks: |