#1108036 gThumb fails to display certain JPEG2000 files

Package:
gthumb
Source:
gthumb
Description:
image viewer and browser
Submitter:
Peter Müller
Date:
2025-06-19 14:09:02 UTC
Severity:
normal
#1108036#5
Date:
2025-06-19 14:07:42 UTC
From:
To:
Grab https://www.debian.org/logos/openlogo-nd-100.png and issue

$ convert openlogo-nd-100.png -compress JPEG2000 -quality 15 openlogo-nd-100.lo-res.jp2
$ gthumb openlogo-nd-100.lo-res.jp2

Observe that gThumb shows the file name but not the image itself. As opposed to gThumb, GIMP is able to open the image.

Please repair/improve the support for JPEG2000 in gThumb.