How to set the font size in Emacs?

Question

I also want to save the font size in my .emacs file.

Answer 1

Here's a snippet that lets you directly specify the global font size using an interactive function:

(defun set-font-size ()
    "Set the font size."
  (interactive)
  (set-face-attribute
   'default nil :height
   (string-to-number
    (read-string "Font size: " (number-to-string (face-attribute 'default :height nil))))))

Answer 2

I use hydra package to control font increase/decrease contiguously by pressing f2 + + + +/f2 - - - -, which means that press f2 once, and then using +/- to control only, and restore default font size by f2 0. Because i have keypad, so I also bind keypad to the font setting.

(defhydra hydra-zoom (global-map "<f2>")
  "zoom"
  ("<kp-add>" text-scale-increase "in")
  ("+" text-scale-increase "in")
  ("-" text-scale-decrease "out")
  ("<kp-subtract>" text-scale-decrease "out")
  ("0" (text-scale-set 0) "reset")
  ("<kp-0>" (text-scale-set 0) "reset"))

And modern editor mouse control functionality supported by below key bindings, press control + mouse wheel to increase/decrease font.

(global-set-key (kbd "<C-wheel-up>") 'text-scale-increase)
(global-set-key (kbd "<C-wheel-down>") 'text-scale-decrease)

Answer 3

Aquamacs:

(set-face-attribute 'default nil :font "Monaco-16" )

From the Emacs Wiki Globally Change the Default Font, it says you can use either of these:

(set-face-attribute 'default nil :font FONT )

(set-frame-font FONT nil t)

Where FONT is something like "Monaco-16", e.g.:

(set-face-attribute 'default nil :font "Monaco-16" )

There was an extra closing parenthesis in the first suggestion on the wiki, which caused an error on startup. I finally noticed the extra closing parenthesis, and I subsequently corrected the suggestion on the wiki. Then both of the suggestions worked for me.

Answer 4

Press Shift and the first mouse button. You can change the font size in the following way: This website has more detail.

Answer 5

In NTEmacs 23.1, the Options menu has a "Set default font..." option.