https://bugs.kde.org/show_bug.cgi?id=499476
Bug ID: 499476
Summary: Gwenview generates thumbnails for every image file in
a folder when opening a picture even when it doesn't
make much sense to do so
Classification: Applications
Product: gwenview
Version: 24.12.1
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: gwenview-bugs-n...@kde.org
Reporter: hazel...@mailbox.org
Target Milestone: ---
SUMMARY
Gwenview spends a lot of time generating thumbnails for every image in the
folder when opening a picture, even when it doesn't make much sense to do so.
My screenshots folder is 4.3 GB in size, contains about 3600 files, and is
stored on a hard drive to not use up SSD space for something speed isn't really
*that* important. This slows it down to a crawl and often makes me thing it's
frozen, because it usually doesn't let me do anything until it's finished
generating thumbnails for all 3600 files.
I get why it would do this, but I feel it doesn't make that much sense to
generate them ahead of time in case the user decides to open the thumbnails
panel. I personally never do, so this just ends up being an inconvenience and
makes the app feel a lot slower than it should for a simple image viewer.
STEPS TO REPRODUCE
1. Open a file in a folder with a lot of pictures, especially one stored on a
hard drive
2. Have the "Show Thumbnails" pane closed
OBSERVED RESULT
Gwenview spends a really really long time generating thousands of thumbnails
from an old hard drive, making it inconvenient to use for something like, say,
a screenshots folder I've carried across distrohops and OS reinstalls
EXPECTED RESULT
My suggestion would be to only start generating thumbnails when the thumbnails
panel is opened
SOFTWARE/OS VERSIONS
Linux: EndeavourOS
KDE Plasma Version: 6.2.5
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.1
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