Tumblr (stylized on its home page as tumblr.) is a microblogging and social networking website founded by David Karp in 2007, and owned by Yahoo! since 2013.[1][4][5][6][7] The service allows users to post multimedia and other content to a short-form blog. Users can follow other users' blogs. Bloggers can also make their blogs private.[8][9] For bloggers, many of the website's features are accessed from a "dashboard" interface.
As of September 1, 2016, Tumblr hosts over 312.2 million blogs.[2] As of January 2016, the website had 555 million monthly visitors.[3][2]