Diff Doc is an easy-to-use document comparison utility. Use it to compare Microsoft Word/Excel, RTF, PDF, and Wordperfect. Regardless of the editor you are using, simply load the original and modified files, press the Refresh button (or F5), and the document comparison will display promptly. Changes, additions, and deletions are highly detailed in the colors and formatting of your choice. Diff Doc can display the document differences in two possible views, All in One or Side by Side. Both views have their advantages, and switching between them is as easy as a mouse click (or F6).