Files with the .djvu file extension contain a compressed image in a format that was developed by AT&T in 1996. DJVU files are most commonly created by the DjVu File software, which is distributed by LizardTech.
The DJVU compression method allows for larger high-resolution color images to be compressed to a significantly smaller size, making it easier for the files to be published and distributed on the Web. This compression allows for faster download times and makes it easier for users to email the files to one another using their email client.
While similar in nature to TIFF files, DJVU files allow for a much higher rate of compression.
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If you have additional information about the DJVU file format or software that uses files with the DJVU suffix, please do get in touch - we would love hearing from you.