Font Substitution in Safari?

First thing you can try is to set Standard (and Fixed-width) font in Safari -> Preferences -> Appearance.

If that's not enough you may make your own css file with all the fonts you want and tell Safari to use that in Safari -> Preferences -> Advanced -> Style Sheet.

 

Try making just a very simple css file (i.e. a text file with .css file ending):

Code:

body {
	font-family: skia, helvetica, sans-serif;
}

And tell Safari to use that... (I haven't actually tried this, but it should work... )

Edit: This works for me some places, coloring and size didn't work...

 

Nah... I had mine at the Desktop while testing...

But you might have to empty Safari's cache to see any changes. Reloading doesn't always help (Safari is quite difficult that way sometimes)...