As something that has been used as a ranking factor since 2010 – Google recently announced that page speed will now become a ranking factor for mobile search.
Starting in July this year, the update will target only the slowest loading pages affecting a small percentage of queries. Do you have mobile pages that fall into this category? All is not lost as query intent can supersede page speed as a ranking factor. Google mentioned that a slow page is still able to rank well if the content is highly relevant to what the user is searching for.
“The “Speed Update,” as we’re calling it, will only affect pages that deliver the slowest experience to users and will only affect a small percentage of queries. It applies the same standard to all pages, regardless of the technology used to build the page. The intent of the search query is still a very strong signal, so a slow page may still rank highly if it has great, relevant content.”
There is no tool that will determine whether a page has been affected as this update is completely algorithmic. Google recommended using the new and updated Google PageSpeed Insights tool to measure page speed and make improvements however, this tool is only useful for large sites as the data is pulled from the Chrome Browser.
Google’s John Mueller adds that the goal of the change is to improve the user experience on search.
(…) In this example, since users from Search would be seeing an AMP page, the speed of the AMP page would be taken into account. However, if a page built with AMP provides a slow experience to users, it may also rank lower in the results.
— John ☆.o(≧▽≦)o.☆ (@JohnMu) January 17, 2018
See the full announcement here.