Tumblr

Tumblr is a prominent microblogging and social networking website that allows users to post multimedia and other content to a short-form blog. Founded in February 2007 by David Karp in New York City, it quickly became a cultural touchstone for internet subcultures and creative expression. The platform's origin is rooted in the 'tumblelog' format, which emphasizes brief, eclectic posts rather than long-form journalism.

Over the years, the ownership of Tumblr has transitioned through several high-profile corporate acquisitions. It was first acquired by Yahoo! in 2013 for $1.1 billion. Following Verizon's acquisition of Yahoo! in 2017, the platform became part of Verizon's Oath subsidiary (later renamed Verizon Media). In 2019, Verizon sold Tumblr to Automattic, the company behind WordPress.com, marking a shift toward an owner with deep roots in the blogging and open-source community.

Today, Tumblr is operated by Automattic out of its San Francisco headquarters. While the platform serves a global audience, its development, core engineering, and corporate governance remain centered in the United States. Under Automattic's stewardship, the platform has focused on enhancing community features and maintaining its unique position in the social media landscape.