How to set the font size in Emacs?

Question

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

Answer 1

Open emacs in X11, goto menu Options, select "set default font ...", change the font size. Select "save options" in the same menu. Done.

Answer 2

Here's an option for resizing the font heights interactively, one point at a time:

;; font sizes
(global-set-key (kbd "s-=")
                (lambda ()
                  (interactive)
                  (let ((old-face-attribute (face-attribute 'default :height)))
                    (set-face-attribute 'default nil :height (+ old-face-attribute 10)))))

(global-set-key (kbd "s--")
                (lambda ()
                  (interactive)
                  (let ((old-face-attribute (face-attribute 'default :height)))
                    (set-face-attribute 'default nil :height (- old-face-attribute 10)))))

This is preferable when you want to resize text in all buffers. I don't like solutions using text-scale-increase and text-scale-decrease as line numbers in the gutter can get cut off afterwards.

Answer 3

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

Answer 4

zoom.cfg and global-zoom.cfg provide font size change bindings (from EmacsWiki)

• C-- or C-mousewheel-up: increases font size.
• C-+ or C-mousewheel-down: decreases font size.
• C-0 reverts font size to default.

Answer 5

Firefox and other programs allow you to increase and decrease the font size with C-+ and C--. I set up my .emacs so that I have that same ability by adding these lines of code:

(global-set-key [C-kp-add] 'text-scale-increase)

(global-set-key [C-kp-subtract] 'text-scale-decrease)

Answer 6

It all depends what you mean by change the font size. This EmacsWiki section provides the best and most complete information. It distinguishes the various cases (text scaling, frame font, buffer/frame, etc.): Changing Font Size.