Theora is a video codec with a small CPU footprint that offers easy portability and requires no patent royalties. While the Theora bitstream format was standardized in 2004 and our beta releases have been used by millions, this 1.0 release is an important milestone reflecting the maturity and stability of the Theora codebase. A number of leading multimedia web groups already support Theora. Upcoming releases of Mozilla Firefox, the world's most popular open source browser, will support Theora natively, as will releases of the multi-platform Opera browser. Top-10 website Wikipedia uses Theora for all of its video.