If you would like to exclude styles from the merged CSS you can use this option. Usually you don't need this option
Exclude 3rd party CSS files (eg: Google Fonts CSS) from merged styles. Usually you don't need this option
If you enable this option your merged CSS will include imported CSS files as well. With this option you can decrease the number of requests, it is recommended to use.
Remove unnecessary whitespaces and minify the CSS code.
Enable if you would like to print the merged CSS into the footer, instead of a seperated CSS file. You should use this function only if WordPress can't write files and you would like to…
Enable if you would like to print the critical CSS into the header, instead of a seperated CSS file. Please note that the critical CSS is already a blocking resource you should inline it in…
Complex CSS animations can increase CSS size, however in some cases animations are not necessary for rendering the above the fold content. With this option you can remove CSS animations from critical CSS
Extra compress for critical CSS. This feature will shorten CSS class names as well.
Swift Performance can generate the Critical CSS (or Critical Path) on the fly for every pages. What is Critical CSS?