Jpeg XL

[UriF]

Will author have any plans to add support for Jpeg XL or it will be in XnViewMP only

[xnview]

jpeg xl is only in XnViewMP x64, why you don't use it?

[UriF]

In some rarely situations I use BOTH applications

[WinnieW]

... XnViewMP x64, why you don't use it?

I can answer that question for my case. XnView Classic is lightweight software, which doesn't consume a lot of system resources.
I'm impressed how much functionality who packed into the amount of Bytes.

XnViewMP is... bloated... compared to XnView Classic when it comes to useage of RAM and storage space.

Pardon, but that's my personal take on this. ´