https://bugs.kde.org/show_bug.cgi?id=423659
Bug ID: 423659
Summary: Wishlist: Disable thumbnail database generation
Product: digikam
Version: 7.0.0
Platform: Other
OS: All
Status: REPORTED
Severity: wishlist
Priority: NOR
Component: Thumbs-Album
Assignee: digikam-bugs-n...@kde.org
Reporter: fellowbiologi...@airmail.cc
Target Milestone: ---
SUMMARY
The ability to disable thumbnail generation would be useful for some specific
use cases of digiKam. It could also help save disc space and speed up the
maintenance of a large image collection.
I use digiKam for reverse searching images in my collection of pixel art and
almost all of these images are low resolution, have low color counts and load
quickly due to their small file size and resolution. The thumbnail generator
doesn't respect these low color counts when creating thumbnails, so in the
majority of cases the thumbnails actually increase in file size and the
thumbnail database becomes larger than the original files. I also have over
100k images in my collection, so generating thumbnails takes a really long
time.
I don't really use digiKam for browsing my collection, I only use the reverse
image search feature to find duplicates, so I don't really have a need for
generating thumbnails.
ADDITIONAL INFORMATION
I actually managed to find a hacky workaround to disable them by denying write
permission on thumbnails.digikam.db and the
C:\Users\USERNAME\AppData\Local\cache\thumbnails folder (which gets used
instead on Windows when thumbnails.digikam.db can't be written to, I don't know
what folder is used for other operating systems). Now you'll get an error
message when starting digiKam but the program still loads and instead of using
the thumbnails database it just seems to load the files directly inside
digiKam. Unlike when using a thumbnail database, it's slower, but in my use
case it doesn't really matter, since the files are already small to begin with
and load quickly.
While this hacky method works, it would be nice to have an officially supported
way of doing this.
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