[Koha-bugs] [Bug 33143] New: Improve handling of local covers upon upload so that they don't increase in file size while decreasing in pixel size.

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=33143

            Bug ID: 33143
           Summary: Improve handling of local covers upon upload so that
                    they don't increase in file size while decreasing in
                    pixel size.
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P5 - low
         Component: Cataloging
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: egpetridis at yahoo.com
        QA Contact: testopia at bugs.koha-community.org
                CC: m.de.rooy at rijksmuseum.nl

Created attachment 147774
  -->
https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=147774&action=edit
Image before upload 1085x1597 pixels 24bit 430.47 KB, image/jpeg

It seems that koha may increase image file size upon upload while reducing
pixel size. 

In the attached examples, koha manages to increase image file size by 119%
(430KB to 940KB) while reducing image size to 30,6% of the original, both in
24bit colour, therefore needlessly increasing database size.

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