It does not have to be a ToC method. Anything that can be automated and give the result I want is OK (ToF, Source Manager, ...) Currently I'm using Cross-reference, and I'm adding http links one by one (page numbers is not important at all), and the end result is (the one that I am after):

Picture 1: https://...
Picture 2: https://...

... so that I also have a link inside the document to a picture (because I have 4-5 pages with http links, and when I need to change the picture or insert a new one in between, I have a problem to find which http link I need to change)

It would be VERY nice when that could be automated in such a way that the link is "in picture" (right click on picture → "Insert link", or alt text, whatever) and the list in the end of the document is updating when a picture is changed or added.

Also, I'm opened to other suggestions, if there are better ones.

P.S. I have a little experience with ToC and other Field codes, as I was started to using them not that long ago.