Tips-How to Reduce WordPress Loading Time Using PageSpeed Insights
Go for pagespeed insights test
Go to https://developers.google.com/speed/pagespeed/insights/ .In the text field fill website url witch you want to test loading time errors and delay causes.Click Analyze button.
Find errors and Recomended Fixes
After click on the analyze button two tabs are showing .One in mobile ,second tab is Desktop.In this tab all recommendations and errors about mobile loading time are showing.And the second tab desktop showing all errors about desktop loading of website.Minimum 84 numbers out of 100 is suggested for good loading time of wordpress.
Download Optimized Resources Files
Replace your theme file with these files.Buy loading these file your wordpress loading time faster than two times before.For more details to how to replace these file with theme file read my post.