Page load speed: Comparison of 4 measurement sites

[djbaxter]

https://www.codeinwp.com/blog/gtmetrix-vs-pagespeed-insights-vs-pingdom-tools-vs-webpagetest/

 

[Greg Bernhardt]

Each has interesting bits. Overall use Google Page Speed Test PageSpeed Insights

 

[xmneax]

I rarely use Page Speed Insights (or never), Lighthouse is a bit more in detail, but I do check Gtmetrix always, as it saves me some digging through dev tools, due to the fact that it's all on one page. Geekflare's audit is also decent.

 

[larribas]

In Page Speed Insights or in Google Chrome you can right click on the website, then click inspect