Usually to view the org or code in a bird view, I will decrease the font size to the extreme of minimal with M-x decrease, C-x z, z, z, z until reach the extreme.
Is it possible to reach the extremes of minimal or max in one step?
You can define a new function that minimize the font size and bound it to an unused keybinding.
(defun my-text-scale-minimize ()
(interactive)
(text-scale-increase (text-scale-min-amount)))
(global-set-key (kbd "C-c -") #'my-text-scale-minimize)
If the font size is too small replace (text-scale-min-amount)
with a negative integer.
To restore the original size use the built in keybinding C-x C-0
.