Scribd is a digital library and e-book subscription service based in San Francisco, California. The company was founded in 2007 by Trip Adler, Jared Friedman, and Tikhon Bernstam. Scribd offers a vast collection of books, audiobooks, magazines, and documents from publishers and authors around the world. The service is available on multiple platforms, including web browsers, iOS and Android devices, and Kindle Fire. Scribd has over 100 million users and is considered one of the largest digital reading subscription services in the world.