How does the Compare plugin work? Notepad++ compare two files through the lines. For example, if you want to compare a programming file with 2 different versions, this plugin can help you find the differences and mark them with different colors. With the Notepad Compare plugin, users can compare two files easily and quickly. Notepad++ is a widely popular free text editor and source editor used on Microsoft Windows. How to make Notepad++ compare two files? In this post, MiniTool provides you with a complete guide. Do you want to compare 2 files easily and quickly? Here the Notepad compare plugin can help you do that.