XnView Software

I've noticed that decoding large JPEG-XL images is very slow - much slower than what djxl can do. From what I can tell, XnView MP's implementation doesn't enable multi-threading. There's an example here of how to decode - from what I can tell, the main thing is that JxlDecoderSetParallelRunner needs ...

Hi there, new to the forum and not a lurker either, so hopefully I'm posting this in the correct spot.
Don't know if this is useful to anyone, but since I went to the effort of coding this for myself, I thought I'd share it in case anyone else out there found it useful.

What is it?
packJPG is an ...