Do you have a whole bunch of galleries to display, all in one folder? You can save space by replacing the regular thumbnail view with a list of gallery names instead.
Example - before
Example - after
On the settings for your gallery box, be sure to choose "Bottom Bar" for "Info Style".
If you want this to apply to every gallery on your website, add the code below to your theme's advanced CSS section. Otherwise, add a CSS content block to the page that you want it to apply to, and enter it there.