Appears to be doing just what it says

I’ve been performance tweaking my sites, and I think this was the last major piece of the puzzle. I host my stuff on Digital Ocean, which uses SSD drives, so I use W3 Total Cache, which makes things super fast (if you configure correctly). I then use Speed Booster Pack to minify and put JS/CSS files where they should be. (Psst: it’s the only one I’ve found that works without messing up the JS/CSS functionality.) THEN, I use this plugin to merge all the google webfont calls into one.

Result? 95+ pagespeed ranks and load times usually under a second.

So, this plugin isn’t the whole enchilada by far, but it was a key piece that others didn’t seem to do well. Or the plugin slowed things down more than the benefit.

Caveat: you don’t want other plugins trying to do the same thing! That will cause issues.