Facebook is pushing advertisers to speed up their mobile sites and warning their ads may not be served if their websites are slow

You might have heard: Facebook created Instant Articles with the goal of reducing load times and creating a more seamless experience for users

But did you know: Facebook wants its advertisers to speed up their mobile sites, and it’s warning that it may limit where their ads appear if they don’t do so. On its Business News page, Facebook outlined a number of ways advertisers can speed up their mobile sites, including minimizing redirects and plugins and compressing files. Facebook also said it would start “prefetching” — pre-loading in the Facebook in-app browser before a link is tapped — advertisers’ sites to help speed up load times, as well. Advertisers won’t have to opt-in to “prefetching,” but they also won’t be able to opt-out, Jack Marshall reports.