
In this pop-up window, type Compare on the Research bar and then you will be able to see the compare tool. After that, a small window will appear, here select Plugin Admin. For doing that, click on Plugins, on the above-given menu titles. To use the compare feature you have to download an additional plugin.

Now go the 2nd file tab and goto Plugins -> Compare -> Compare.If you have multiple tabs open, be on the 1st file and go to Plugins -> Compare -> Set as first to compare.Open the 2nd file you want to compare in another tab,.Open the 1st file you want to compare in one tab,.

If you do not see the Compare tool under the Plugins menu, then you would need to install it using the Plugin Admin (Manager) - follow this tutorial to install it - How to compare two files in Notepad++ You can compare two files (be it XML, JSON, CSV, Java, Python, HTML, JavaScript, CSS code, or any text file) to know if they are identical, do they have something missing, what is the difference between the two files. Notepad++ is the most popular Text Editor for the Windows Operating System, one of its widely used features of it is text compare.
