What Is a PDF Reader?by Ann Johnson
PDF is an acronym for portable document format. A PDF is a file format that is used to make the exchange of online documents easier. PDFs can be used as printable attachments on web pages, sent easily via email or used when formatting a book for digital download. A PDF reader is needed to view a PDF document.
The software used to open and read a PDF is called a PDF reader.
Adobe Systems created the first PDF reader in 1993. Today other companies make software that can read PDF files.
Adobe and other software companies distribute PDF readers for free online. Users can upload the program, which allows them to view PDF files.
Companies That Offer PDF Readers
Aside from Adobe, free PDF readers are available through Foxit Software, Sumatra and Visagesoft.
Extra Features of PDF Readers
Some readers provide additional features, such as the ability to fill in forms, increased resolution options and speed, and some will allow you to edit the document.