How to download only one page + all the pictures associated with it from someone else's site?

Question

Parsing

You need to download one page with a couple of hundred images (jpg,jpeg,gif,bmp,png) that
are shown by javascript on click.
You need to somehow download all the pictures. The remaining .css, .js resources are not needed (although there are also a lot of them :)

Tell me which program is better to use for this? With what parameters to run it?

PS: I can download the ENTIRE site along with the video, but it's TOO LONG... and they can probably block...