Emacs: Change Font Size

By Xah Lee. Date: 2022-08-05.

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.

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

Works in {Windows, Mac, Linux}.

To set a font and size across sessions, see Emacs: Set Font in Init File