If you analyze your site via Google Page Speed Insights, you may get a warning about google fonts under Eliminate render-blocking JavaScript and CSS in above-the-fold content.
If the google fonts are loaded asynchronously, the warnings are solved. In addition, loading google fonts asynchronously makes the pages faster.
The premium version of WP Fastest Cache fixes the warning.
The Delay JavaScript is the feature which helps improving the Reduce unused JavaScript warning in Google PageSpeed Insights tool.
The image optimization feature reduces the size of images so that the page is loaded faster.
The Render Blocking JS faeture moves all js resources to footer and this can sometimes cause problems. In this case…
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