Adobe reader is a free program developed and distributed by Adobe system. The main use of Adobe Reader is to open PDF documents. It can also help fill forms by typing responses into the PDF form. PDFS could be different kinds of files such as text documents, images, books, or a combination of these files. Once you open the PDF files with the Adobe Reader, nothing is changed and each PDF looks the same on a windows computer as well as on Mac. With Reader-Plug in you can also view PDF files in an internet browser. More so, with Adobe Reader, you can add e-signatures to your document and end them electronically. With additional specifications, adobe reader can convert PDF text to Excel and word.