If you do not want any spaces in a file using Notepad++ you can make use of the Replace option with Regular Expression as follows,
- Open File in Notepad++
- Now go to Menu: Search -> Replace... (keyboard shortcut: Ctrl + H)
- Now in "Find What" add regular expression \s
- Keep the "Replace With" option blank.
- Click on Replace All.
- All spaces in the file will be removed.

This is not an AI-generated article but is demonstrated by a human with Notepad++ running on Windows 11 PC.
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