Portable Document Format (PDF) files are primarily created from printable source material, for example a Word document or PowerPoint presentation. The advantage of using PDF is that you do not need ...

PDF is used by everyone nowadays because of its convenience to open, create, read, review, and print documents regardless of the hardware device or operating system or software program you are using.

Most of us take PDF files for granted. Years ago, Adobe created a universal file format with their Acrobat software that produced documents which could be opened on PCs, Mac and Unix/Linux computers.