Notepad++: How to remove extra spaces at the start and end of each line

If you want to remove the spaces or tabs at the start and end of lines on Notepad++ you can either write your own regular expression with Replace option.

But the best way to achieve this is by making use of the build option that you can find under Edit > Black Operation > Trim Leading and Trailing Space

Human-Written Content: This article was demonstrated by a human, not AI.

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Tip: If you only want to trim certain line(s) then you can select it first and then use the trim option.