How to PRINT web page in larger font type?
Easiest &amp; fastest way to do it is to temporarily change preferences for minimal font-size.


open in Safari's Application Menu: Safari / Preferences or use hotkey ⌘+,
there tab Advanced
there turn on checkbox "Never use font size smaller then XX" where XX is your preferred font-size. That is it.
print it






So the next screenshot demonstrates the result. On the left side not changed min-font-size (opened in Preview.app as prepare/preview before printing). On the right side - all is same but min-font-size is 24.