How To Compare Two Files Using Notepad++

If you need to compare the contents of two files in Notepad++ has a great plugin for doing just that. Begin by clicking the Plugin Manager from the Plugins menu:

Next step select the Compare plugin and click Install button:

Now open both of the files you would like to compare as two separate tabs in Notepad++. Then from the Plugins menu select Compare -> Compare (or use the shortcut Alt+D):

Your two files will now be opened on side-by-side with conflicting lines highlighted. You can use the blue arrows on the toolbar to navigate between each alert.