Best Tools to Cheak Website/Blog Speed?

•GTmetrix
•Pingdom
•Google’s PageSpeed Insights
•KeyCDN Website Speed Test
•WebPageTest
•DareBoost
•Web Page Analyzer
•YSlow
•Load Impact
•Geekflare
•dotcom-monitor
•Sucuri Load Time Tester
•Varvy Pagespeed Optimization
•Uptrends
•Pagelocity
•SEOptimer
•SEO Site Checkup