Any chance the images once lived in CONTENTdm?  The application assigns internal file names to uploaded digital objects with the file extension .cpd.


Rachel Shaevel
Electronic Resources Cataloger
Technical Services/Catalog Department
Chicago Public Library
Harold Washington Library Center
400 S. State St.
Chicago, IL 60605
P: (312) 747-4660
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-----Original Message-----
From: Code for Libraries [mailto:[log in to unmask]] On Behalf Of Andrew Gordon
Sent: Tuesday, March 11, 2014 10:15 AM
To: [log in to unmask]
Subject: [CODE4LIB] .cpd file format head scratcher

Hey All,

For a set of digitized pharmaceutical cards, I am coming up against an image file format that seems to be locked in time. It's supposedly a Compressed PhotoDefiner (?) lossless (.cpd) file ( Though when I try to load up the software, I can't get it to take on any of our windows machines (running 8 and 7). Don't have a mac on hand so don't know if that works or not, currently.

In my experience, though, I've always been able to find some rogue third party file converter (or imagemagick) to be helpful in these scenarios but this format  is just not something that appears to have been accounted for. Additionally, it's one of those file formats that seem to only pop randomly generated answer sites with questionable downloads in a google search, such as

Just wanted to see if anyone has come across this format and whether there might be any tools to convert it.


Andrew Gordon, MSI
Systems Librarian
Center for the History of Medicine and Public Health New York Academy of Medicine
1216 Fifth Avenue
New York, NY, 10029