Emacs: Change Font Size

Change Font Size Globally via Menu

Change Font Size Globally by Mouse

new in Emacs 29 (Released 2023-07)

hold down Ctrl+Meta then scroll mouse wheel. (the command name is mouse-wheel-global-text-scale )

Change Font Size Globally by Command

new in Emacs 29 (Released 2023-07)

Alt+x global-text-scale-adjust

then press

• = → Globally increase font size
• - → Globally decrease font size
• 0 → Globally reset font size

You can press them repeatedly. Press any key to exit.

Change Current Buffer Font Size by Command

Alt+x text-scale-increase

Make font size larger in current buffer.

Alt+x text-scale-decrease

Make font size smaller in current buffer.

Alt+x text-scale-adjust

Changes font size in current buffer. Call it, then press + to increase, - to decrease. You can press them repeatedly. Press 0 to set it back to default size. Press any key to exit.

Change Current Buffer Font Size by Mouse

Hold Ctrl then mouse scroll up or down. ( the command called is mouse-wheel-text-scale )

Works in {Windows, Mac, Linux}.