See also blog post on notepad++ font size and zoom

• method: touchpad finger gesture — least reliable
• method: touchscreen gesture — but a “shallow” zoom, which pushes the screen-edge content off screen 🙁
• method: hot key — most reliable. My top recommended method if available. However, beyond browsers, many apps don’t have familiar keyboard shortcuts.
  • MS Outlook: no hot key:(
  • NotepadPlus: Ctrl and “+” key on far-right