Ghostty/Q/Is it possible to quickly increase or decrease the Ghostty font size with a keyboard shortcut?

• Is it possible to quickly increase or decrease the Ghostty font size with a keyboard shortcut? card

  • AI Answer

    • AI/Response
      • Short answer: Yes — Ghostty ships with default font-size keybindings that work without any configuration.
      • macOS defaults (super = ⌘):
        • Cmd+= → increase_font_size:1
        • Cmd+- → decrease_font_size:1
        • Cmd+0 → reset_font_size
      • Linux/GTK defaults (ctrl):
        • Ctrl++ → increase_font_size:1
        • Ctrl+- → decrease_font_size:1
        • Ctrl+0 → reset_font_size
      • Custom step size: The actions accept an integer argument for how many points to adjust per press. Example custom binding:
        • keybind = super+shift+period=increase_font_size:2
      • Cost of the default: super++ and super+= are handled by Ghostty itself and never reach the program running in the terminal, so ⌘+ cannot serve as a shortcut inside tmux — see tmux/Q/What expands every item in tree mode, and why does Cmd-plus resize the Ghostty font instead?
      • Sources: Keybind reference; Configuration reference