JPEG XL HDR images on a non-HDR-cabable system appear dark and dull

[o-l-a-v]

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

[xnview]

you need to enable Settings>ICC

[Kadet]

you need to enable Settings>ICC

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

[xnview]

you need to rebuild it

[o-l-a-v]

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.

[Kadet]

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

[fireattack]

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.

[o-l-a-v]

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

[xnview]

Thanks to your detailed description I can reproduce the problem.

[xnview]

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

[o-l-a-v]

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