WebPageTest (https://webpagetest.org/) is a free tool you can use to give you web performance details. It works much like developer tools, but adds even more value:
Not only does it provide a detailed waterfall, it provides testing from different locations, varying speeds, and devices. Sometimes, the truths it reveals can be hard to swallow, but it provides you with targeted areas so that you can improve your performance:
To perform a test, visit https://webpagetest.org. If your site has a public URL, ...
