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Each of these is processed in its own way.

Essentially, it divides a document into three layers: background, foreground and a black and white mask. As a result, there exist today many free software products for working with the DjVu format.īy itself, the DjVu format is a very interesting solution, presenting itself as a technology of compressing an image with losses. At the same time, the format itself remained a free file format.

At about the same time, the company AT&T sold its development to the firm LizardTech, which began to use it in its own commercial products. The next year, the third version of the DjVu format appeared. The feature of uniting several images in one file with the possibility of browsing pages, as well as the ability to add so called ?hot spots?, which were like hyperlinks, were implemented.

In 1999, a new version of the DjVu format was published. In 1998, the first plug-ins appeared for viewing DjVu documents with the aid of browsers. Therefore, documents were understood to mean scanned magazines, newspaper, books and technical documentation. However, at that time, few people were able to predict that in the future, companies would exchange agreements and contracts via the global network. The main task that was put before the developers was to create a technology of storing and sending scanned documents, i.e., all documents in electronic form. At that time, one of the subdivisions of the company AT&T began work on the creation of a new format.

Today, we will compare two such formats: PDF and DjVu. At the same time, one of the most important questions is the choice of a format in which the documents will be submitted, stored and sent to other firms or distant subdivisions of the same company. The majority of companies sooner or later encounter the need to implement a digital document flow system.