Isn ' t it already more dangerous to take the off ramp at an interstate than landing a plane ? <| sep |> Well , page speed is just checking your site against a list of recommendations . It ' s a helpful tool , but high page speed score does not guarantee that your site will actually be fast . For example , if you have a very light , static site with just a few small files to load , and it ' s hosted on a fast server , even if you don ' t use any compression , cache headers , don ' t minimize your files , etc . It won ' t really matter . Page speed will give you poor score , but your site will feel snappy to the users . And vice versa you can get very high score in page speed if you follow all the recommendations , but if your server takes long time to respond and you are loading hundreds of files , it won ' t help much . I have seen a page with page speed score 90 that ' s taking something like 20 seconds to fully load . I think browsers network tab or waterfall view is even more useful to figure out what ' s actually slowing your site down , than the list of recommendations it gives .