Commonly used in the following two files, but they are on the original data bytes for comparison, if you are txt file, so there is no problem with the comparison, if it is a word such as other documents, you need to compare the contents of the first copy to two txt files, and then use two txt files for comparison.

1, beyond compare

Powerful file comparison tool, you can compare files and folders, after the installation of the right-click menu will be more than a few options, you want to compare, at the same time, select the two files to be compared, and then right-click on one of them, in the pop-up menu, click on "Compare! ", then the comparison window will pop up, you can manually copy out the different contents.

2, UltraEdit

This software can open multiple files at the same time, and then edit or compare any two files.

First of all, use this software to open the two files you want to compare, and then click on the toolbar to the left of the "File" in the drop-down menu point "Compare Files", the shortcut is alt + F11. Then a dialog box will pop up, if there is no special requirements, just click OK. If there are no special requirements, you can just click OK.