Since google tends to put more and more weight on page loading time in their ranking algorithm, I decided to (finally!!) optimize my site regarding loading time and general performance. I run a news site, with quite a dense and heavy main page, and relative light article pages. First PageSpeed results were no good: 64/100 for the main page. After modifications, I now get 80/100 on the main page. Certainly not state of the art, but already an improvement. The good news: article pages went up to 95/100. (I didn't test them before I started tweaking, but I can hardly imagine it was that good) Now the main question: Do I need to put more effort in tweaking the main page, while most google related traffic lands directly on one of the article pages, which have a score of 95? In other words: does google takes each separate page (or article) performance into account to rank it, or is it the main page that counts for the whole site?