Hi,
...I was wondering if there is a way to see foto in "mosaic mode". Something like this:
unfortunately, this is not possible right now.
...Otherwise, how can I increase the thumb size of the pics that scrolls under the foto view.
The size of the Motiongallery/Minis can be changed in Configuration Manager here:
Detail View >> Motiongallery
Regards
MrMusic
Sorry, it's here, in the same page you suggested
Display mode for mini thumbnails?
M
Exactly 
Last but not least, the "static" view is close to a mosaic view:
Yes, almost. 
Something similar can be achieved by setting the height of the thumbnails to the same value.
If you want (same as in your first link) the same width, that does not look nice if the thumbnails have different heights.
See screenshot:
PS: Is there a specific reason why you did not install the Italian language files on your website?
I do like to have such a view, too. My favorite would be a mansory layout for the category view. For this kind of view, tags for filtering would also be a very nice feature in particular for large categories. Additionally an asynchronous reload of the images while scrolling would be nice. It would reduce the initial waiting time for the category view to load, especially for large galleries...
Here are some approaches how you could implement such a mansory layout:
https://css-tricks.com/piecing…for-a-css-masonry-layout/
Here is an approach for async. reload (lazy load) of images:
https://imagekit.io/blog/lazy-loading-images-complete-guide/
