Google’s Most Notable Algorithm Changes – a visual history

Ranking well in the Google search results is akin to finding the pot of gold at the end of the rainbow – everyone wants it, but it often seems out of reach.

Google’s algorithm (the way in which it determines what sites rank higher than others) is made up of over 200 different factors or ‘signals’, and this algorithm often changes more than twice a day!

The team over at have put together a graphic outlining when and why Google has rolled out its more notable algorithm changes:

history of google algorithm changes