Format Licensing
DjVu is an open file format. The file format specification is published as well as source code for the reference library. The original authors distribute an open source implementation named "DjVuLibre" under the GNU General Public License. The ownership rights to the commercial development of the encoding software have been transferred to different companies over the years, including AT&T Corporation, LizardTech, Celartem and Caminova.
In 2002, the DjVu file format was chosen by the Internet Archive as the format in which its Million Book Project provides scanned public domain books online (along with TIFF and PDF).
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