Google Fonts

I’m not sure I understand what you mean by “turn off Google fonts”. The plugin doesn’t remove or add files from loading on the website. It merely excludes selected files from being aggregated in the combined CSS or javascript file.

Generally you only want to do that when combining the particular file presents a problem. The plugin excludes Google font files by default because Google loads the font type based on which browser accesses the file. Since different browsers use different font types, if this file is cached in the combined file then the font shows incorrectly in some browsers.