What is "mobilegeddon"

Mobilegeddon is a name given by webmasters and web-developers to Google's algorithm update of April 21, 2015. The main effect of this update is to give priority to web sites that display well on smartphones and other mobile devices. The change does not affect searches made from a desktop computer or a laptop.

Google announced its intention to make the change in February 2015. The Economist found the timing "awkward" because they said "It comes less than a week after the European Union accused the firm..." of anti-competitive behaviors.

The protologism is a blend word of "mobile" and " Armageddon" because the change "could cause massive disruption to page rankings." But, writing for Forbes, Robert Hof says that concerns about the change were "overblown" in part because "Google is providing a test to see if sites look good on smartphones".

Search engine results pages on smartphones now show URLs in "breadcrumb" format, as opposed to the previous explicit format.