Change the font size for the input and output cells on all notebooks.

To change the font used for the input and output cells on all notebooks to Source Code Pro, I enter the following code:

CurrentValue[$FrontEnd,{StyleHints,”CodeFont”} ] = ”Source Code Pro”

However, I was unable to do the same to change the font size for the input and output cells on all notebooks. Can anyone help?

On the Mac, you can find this setting under “preferences”.

Under the “Advanced” tab, open the “Option Inspector”.

Then you can find this setting under:

Formatting Options
Font Options
StyleHints

You can also just search for “StyleHints”

Have a great day.

Thanks again Mike for the information.
Regards
Sinval

You can make a custom stylesheet and install it on your computer or edit the built-in stylesheets. Working with Stylesheets—Wolfram Documentation

I am grateful for the attention.
Regards