I have Notepad++ and I got some XML code which is very long. When I pasted it in Notepad++ there was a long line of code (difficult to read and work with).
I want to
Plugins -> XML Tools -> Pretty Print (libXML) or Ctrl+Alt+Shift+B
You probably need to install the plugin:
Plugins > Plugins Manager > Show Plugins Manager
If you are behind a proxy, download it from here.
Then copy XMLTools.dll
to the plugins directory and external libraries (four dlls) into the root Notepad++ directory.