Using Diff Doc Professional you can establish clear differences between two documents. The program supports the most popular formats, such as Office Word, Excel, PowerPoint, PDF, TXT, HTML, XML, etc.
To make this task easier, Diff Doc Professional has an interface in which you can simultaneously see the two documents being compared. You just have to press the button that says Refresh view and show differences on the task bar, and Diff Doc Professional automatically highlights all the differences.
Besides, the program doesn't only work with individual documents, it can also be used to compare the contents of two folders.
30 days free trial.