I'm using next gen gallery for wordpress for my pictures. I tag the pictures with the right keywords. I'm curious if that's all I should do, because I'm getting nice traffic from google image search. I've many pictures and I want them to be optimized for google image search. Is a plug-in like next gen gallery enough for the job? Because for separate pictures it doesn't create separate html pages, which I heard is a better seo trick for images.
I don't think separate pages makes any difference for Google images search, just the tags and the file name.