The trend of conveying useful information have adopted a new way as through capturing a file and sending it through an electronic documentation form to the destination via email or some other means. Every article, essay, thesis, and other documents can easily be converted into PDF format, and the sender quickly shares it with others for the conversion of ideas and delivery of some useful information and documents. PDF stands for Portable Document Format, which conveys exactly the same working criteria as it stands for, by providing its efforts for the delivery of a message from a sender to destination. This method was introduced in the early 1990s, after which the method of transferring file and documents is just boomed. PDF efficiently maintains the document format and the format is ubiquitous. PDF has a competitive advantage by the providence of its compression of high-quality files to relatively lower size. Another big advantage of using PDF is its adaptively on almost all operating systems which is a great edge for this. For this reason, many apps are also introduced that merely works for PDF files viewing, saving, sharing, editing, and doing tons of other operations with these documents and files. The best of which is presented below.