Installation, Usage, and Uninstallation Instructions for Page Speed - He Qingyong SEO Blog

When you run the Page Speed tool, it generates analysis results based on the status of the page. To ensure the most accurate analysis, it's best to run Page Speed after the page has fully loaded. Otherwise, Page Speed won't be able to analyze the conditions of resources that haven't yet loaded, or you can opt to activate the automatic run option upon completion of loading, which will allow Page Speed to automatically perform an analysis once any page has finished loading. For more details, refer to the following: