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1.8.8: some JXLs shown darker than they are?

Posted: Sun Apr 20, 2025 7:23 am
by johnsveil
XnView: MP 1.8.8 - 64 bit
OS: Windows 64bit

Some photos look dark in Xnview MP after their conversion to JXL via cjxl.exe

To reproduce:
Open the photo in Xnview MP and in a different image viewer (IrfanView in my case)

The photo https://c.mail.com/@649572087031144541/ ... Xv6vEzBkSw

Image

Re: 1.8.8: some JXLs shown darker than they are?

Posted: Sun Apr 20, 2025 8:15 am
by simon
The issue comes from the ICC profile:
1) convert the jxl into png and/or jpg using djxl
2) compare the 2 or 3 files with XnView; They look very similar, but their looks depend on whether the color management (use ICC profile) is activated or not:- if not, all look dark, if yes, all look pale
What is a bit strange for me is that exiftool finds an ICC profile in both the png and the jpg generated from the jxl but not in the jxl itself. With jxlinfo, one gets Color space: 548-byte ICC profile, CMM type: "appl", color space: "RGB ", rendering intent: 0

Re: 1.8.8: some JXLs shown darker than they are?

Posted: Fri Apr 25, 2025 8:18 am
by xnview
Settings>Color profile is enabled?

Re: 1.8.8: some JXLs shown darker than they are?

Posted: Fri Apr 25, 2025 9:39 am
by cday
xnview wrote: Fri Apr 25, 2025 8:18 am Settings>Color profile is enabled?
Tools > Settings... > General > Color management -- Use ICC profile for monitor (Slower) ?

Default seems to be Custom (with no selection) rather than System ??