Hello Karl,
I learned about X3 Photo Gallery only a few days ago and installed the demo with sample content to play around a bit.
I might think about switching from Koken to X3 Photo Gallery after some further testing.
In the sample content I see the the image-links section. I think this would be a nice option to place links to friends or families webpages.
I managed to add an own picture in the sample content but it's always shown as a regular image, I don't find any option to place a link. I checked the sample images/links but I can't find the right setting where to place the URL.
Maybe I will add the one or other questions while testing it out.
Thank you and greetings from Germany
Dominik