XnView Software

Opening JPEG XL HDR images in XnViewMP on a system that does not support HDR makes the images appear dark and dull compared to opening the same image with a program that seems to handle HDR better, like the Thorium web browser in my example.

Sample image can be found here:

• Web page containing multiple images: https://people.csail.mit.edu/ericchan/hdr/hdr-jxl.php
• Image in question: https://people.csail.mit.edu/ericchan/h ... GP0297.jxl

Screenshot showing the difference:
My environment:

• Windows 11 22621
• XnViewMP 1.6.1 x64
• Laptop that doesn't support HDR (Dell XPS 7590 with 1080p non-HDR panel)
• External monitor that supports HDR10 according to manufacturer (Samsung LS27A600NAUXEN), but Windows 11 say they don't support HDR.

Programs that seem to display this sample image correctly:

• GIMP v2.10.34
• Paint.NET v5.0.11 with pdn-jpegxl v1.0.5
• PhotoQt v3.4
• Thorium Browser (thorium-win-avx2) v117.0.5938.157

you need to enable Settings>ICC

xnview wrote: Thu Oct 19, 2023 2:12 pm you need to enable Settings>ICC

It helps for image, but not for miniature. Miniature is stile greyed like on left sample.

you need to rebuild it

xnview wrote: Thu Oct 19, 2023 2:12 pm you need to enable Settings>ICC

Then I'd like to change this to a feature request.

User story: As a non-technical user I expect an image viewer to display a valid image correctly by default. HDR images will likely get more common in the future.
Feature rquest: Change default behavior to decode using embedded ICC profile if present.

xnview wrote: Sat Oct 21, 2023 7:28 am you need to rebuild it

The first thing I did was delete the entire thumbnail database and build them from scratch. Did not help.

I agreed withz o-l-a-v — HDR images will likely get more common in the future. It's time to do XnView friendly for HDR

xnview wrote: Sat Oct 21, 2023 7:28 am you need to rebuild it

Please see viewtopic.php?f=62&t=46386 I'm pretty sure using ICC does not work for thumbnail, at least in 1.6.1.
(Of course I tried to rebuild it multiple times.)

IIRC it worked before.

Here's an image that doesn't look right even with ICC enabled in XnView MP v1.6.1:

• https://github.com/gwy15/hdr/blob/main/IMG01623-HDR.jxl

Found here:

• https://github.com/d2phap/ImageGlass/is ... 1819045271

• Left: GIMP
• Middle top: IrfanView with https://www.irfanview.net/plugins/jpeg_xl_64.zip
• Middle bottom: Paint.NET v5.0.11 with pdn-jpegxl v1.0.5
• Right top: XnView MP v1.6.1 with ICC enabled
• Right bottom: Thorium v117

Thanks to your detailed description I can reproduce the problem.

This problem is supposed to be fixed in XnView MP 1.6.2. Please check and confirm the bug fix here.

It looks correct in XnView MP v1.6.2 as far as I can see, great.