How To Change Font Size In Notepad++

You can also change the size of font in Notepad++ by holding Ctrl + scroll with mouse wheel.

You can check out the "Reduce" option in Settings > Preferences > General > Tab Bar (section).

In Notepad++ (6.5) the size setting for tab labels is in Settings > Preferences > Tab Settings, although this appears to be a setting for formatting within documents.

Hopefully one of those settings will help.

I'm trying to change the font size in Notepad++

This is done in the Style Configurator:

1. Goto Menu > Settings > Style Configurator

2. Set Font size

3. Check Enable global font size

4. Press Save & Close