I have rolled a pending PDF::Reuse release which incorporates several methods which I wrote to accommodate the label and patroncard tools in Koha back in 2009. I had hoped these would be included in PDF::Reuse before now; however, they were not. The module appears to have been abandoned by the original author, and I was able to be listed as a co-maintainer.
I have tested these changes on Koha's current head, and they appear to work fine. This is an official call for testing these changes prior to my releasing the new version of PDF::Reuse.
Since these changes directly affect Koha, they have the potential to affect current and future stable installs. Below is a link to a dev release of PDF::Reuse which contains the proposed changes. Attached is a patch formatted against the head current at the time of this email. Please do the following:
1. Upgrade PDF::Reuse to 0.35_01.