DjView is a web-centric format and software platform for distributing documents and images. DjVu can replace PDF, PS, TIFF, JPEG, and GIF for distributing scanned documents, digital documents, or high-resolution pictures. DjView content downloads faster, displays and renders faster, looks nicer on a screen, and consume less client resources than competing formats. DjVu images display instantly and can be smoothly zoomed and panned with no lengthy re-rendering. DjVu is used by hundreds of academic, commercial, governmental, and non-commercial web sites around the world. In short, DjView is a multipage document format that can use a number of different coder/decoders (codecs) to compress the individual chunks that compose an images or a page. In fact, DjVu is really four compression techniques wrapped into one format: - DjVuPhoto (aka IW44): A progressive, wavelet-based lossy compression format for continuous-tone images (i.e. photos and pictures). - DjVuBitonal (aka JB2): A lossless or lossy compression technique for bitonal (black & white) or palettized images that is particularly effective on images with repeated shapes (such as documents images where the same character appears many times in the document). - DjVuDocument: A technique for scanned color document that separates images into a foreground layer that contains the text and line drawings, and a background layer that contains the pictures and background textures. The foreground is encoded with DjVuBitonal and the Background with DjVuPhoto. - BZZ: A general-purpose data compression technique similar to bzip2. Bzz is used to compress searchable text layers and other metadata in DjVu documents. Here are some key features of \"DjView\":