The stated purpose of the Google Panda algorithm update was to reward high-quality websites and diminish the presence of low-quality websites in Google's organic search engine results. It was also initially known as "Farmer." According to Google, Panda's initial rollout over the course of several months affected up to 12 percent of English language search results

Other facts about the Panda update
Panda was initially rolled out separately from the core algorithm but was then integrated into it on an unconfirmed date in March 2012.

Panda was named after Google staffer Navneet Panda.