Hello Nader! I'm also from the Seattle area so still waving from a safe social distance. Glad to have you here.
Our old forums had the pictures in the posts, we switched formats a year or two ago and mostly use the thumbnails. I'm always glad to be on a forum that allows pictures at all -- I'm wordy at best so it takes me at least 10,000 words to describe a picture.
With my browser I haven't found a better way to navigate multiple attachments than clicking and using the back arrow.
Looking forward to seeing your work!