Download free djvu reader and djvu viewer. Djvu format.

DjVu - a format designed specifically for storage of scanned documents (books, magazines, etc.) in electronic form. The format is often used in cases where the full recognition of the document can not or, conversely, must submit the original document type, along with defects and distortions (eg, sheet of parchment).

The main advantage of the format djvu (pronounced "deja vu") - this is a high degree of compression, which is achieved by using special technology that separates the scanned image into three layers, each of which is compressed with different quality. In addition, djvu file may contain text (OCR) layer, whose presence allows you to search through the document and copy text blocks.

Format djvu often compared to the pdf, but in fact they have common sufficiently small. Externally djvu and pdf documents look similar: text, images, active menu. At the same time pdf has a great interactive features that can contain multimedia objects (including video / audio recording), and scripts. File pdf, consisting only of the scanned and OCR program unrecognized pages just a special case, whereas for djvu this rule.

Based on the foregoing, Djvu logical to compare the graphics formats JPEG, GIF, TIFF, and so on. Thanks to our own compression algorithm format djvu without exaggeration be called the ideal way to create and store electronic books. High quality images in the gif will have a distorted view, and the text is saved and uzhaty in jpg, blur. The solution to this problem and has a format djvu.

The graph shows how great the difference of the scanned sheet of A4 with text and color illustrations resolution of 400 dpi. This occurs because the compression when creating a djvu file occurs in several stages. First, the text is processed and uzhimayutsya using an algorithm JB2 (dictionary of images), and then placed in a separate layer uzhatye pictures.

Through an open specification for the work with djvu documents are freely distributed program for all popular operating systems. Download djvu reader for free through our file repository. The most popular are Djvu Solo from the company LizardTech and Windjview, which is developed and maintained by our developers.