The main highlighted features and functions of Altarsoft PDF Reader are that it allows its users to open and save the PDF files, enjoy the zoom-in and zoom-out system, rotate the pages, encrypted the PDF files, decrypt the PDF files, add the annotations, add bookmarks, etc.įurthermore, it also offers to add watermarks, add attachments, convert the images to PDF files, merge multiple PDF files, insert the blank pages in the existing PDF files, insert text from other text files, extract the selected pages, extract the images, extract the text content, split the documents into images and single pages and much more. It is simply one of the best programs for viewing and editing PDF files in a simple and user-friendly environment. Altarsoft PDF Reader is a simple to use PDF files management program that allows its users to view PDF files, encrypt the files and even annotate them.