DjVuLibre

This is free software that will allow you to read documents that are in DJvu format. This type of program can be useful to open digital images and documents, with the performance you know like PDF from Adobe.

In some of the specific characteristics of this software, it is worth highlighting the layering of images without sacrificing quality, which will give you a reduced size of the document. At the same time, the application has an option for full screen viewing of documents and allows you to include text in the images that you are scanning. The last highlight is the ability to export in different formats, including its competitor PDF.

Like what has been commented, it is an alternative to PDF, where you will have the same quality of this program, but it is not as know by users that need to use these programs to be able to do their scanning jobs and work with all their digital documents. It is a program that will give you a reliable alternative to the popular PDF format that you may already be familiar with.