Today, I recommend two websites for testing websites. Friends who play blogs or work with websites are all concerned about the website's loading speed. Regarding speed, the hosting service is the first major factor. If it's a blog, in addition to choosing a hosting service, you also need to consider the selection of the blog theme template. Yixiu has deep insights into this - different themes can result in completely different loading speeds, and the differences can be quite significant. If you want to change your theme, you can take a look at this article "10 Points to Note When Picking a New Blog Template," which might be useful for you.
Testing Website One:
This tests the reaction speed of a website, measuring the time difference from when your browser initiates a connection to when the website server responds. It roughly reflects the DNS resolution time plus the server response time of the website.