Bug#1111833: Please add support for JPEG 2000 images

[Matthias Geiger]

Control: reassign -1 glycin-loaders
Control: forwarded -1 https://gitlab.gnome.org/GNOME/glycin/-/issues/183
On Fri, 22 Aug 2025 18:00:18 +0200 =?UTF-8?Q?Peter_M=C3=BCller?= 
<PeterMueller at ro.ru> wrote:
> Package: loupe
> Version: 48.1-3
> Severity: wishlist
> 
> Reproduce by grabbing a sample file from https://filesamples.com/samples/image/jp2/sample1.jp2, running `loupe sample1.jp2`, and observing «Could not Load Image» and «Unknown image format: “JPEG-2000 JP2 image (image/jp2).”».
> 
> (Off-topic: I consider it not fully wrong but unusual to see «Could not Load Image» in title case. My taste would be to simply write, «Could not show image due to its unknown format, “JPEG-2000 JP2 image (image/jp2).”» After all, those are two different pieces of information, since even if the image format is unknown, the program could still read the file at least partially, in a low-level sense LOAD it (but not necessarily show the image).)
>
Hi Peter,

opened an upstream issue about this. We'll have to wait to what they 
think. Feel free to add some more context why you want to have loupe 
support this image there. Regarding the error message, this is a 
separate issue, please report this upstream.

best,

werdahias