In 2020, our policies and enforcement were put to the test as we collectively navigated a global pandemic, multiple elections around the world and the continued fight against bad actors looking for new ways to take advantage of people online. Thousands of Googlers worked around the clock to deliver a safe experience for users, creators, publishers and advertisers. We added or updated more than 40 policies for advertisers and publishers. We also blocked or removed approximately 3.1 billion ads for violating our policies and restricted an additional 6.4 billion ads.
Our enforcement is not one-size-fits-all, and this is the first year we’re sharing information on ad restrictions, a core part of our overall strategy. Restricting ads allows us to tailor our approach based on geography, local laws and our certification programs, so that approved ads only show where appropriate, regulated and legal. For example, we require online pharmacies to complete a certification program, and once certified, we only show their ads in specific countries where the online sale of prescription drugs is allowed. Over the past several years, we’ve seen an increase in country-specific ad regulations, and restricting ads allows us to help advertisers follow these requirements regionally with minimal impact on their broader campaigns.
We also continued to invest in our automated detection technology to effectively scan the web for publisher policy compliance at scale. Due to this investment, along with several new policies, we vastly increased our enforcement and removed ads from 1.3 billion publisher pages in 2020, up from 21 million in 2019. We also stopped ads from serving on over 1.6 million publisher sites with pervasive or egregious violations.