Screen scaling, which is the best way (or are they all the same)?

[Chris Green]

I have a (fairly) new 4k screen and I'm puzzling over the various ways
of making things a bit bigger overall.  I'm after maybe 20% or so
increase in size.

I know I can adjust individual things like font size in terminal
windows and default GUI font sizes etc. but there's a couple of places
where I can't do this (old-fashioned bitmap fonts which I need for one
program for example) so an overall scaling would be better.

There seem to be at least two places where I can adjust things (I'm
running xfce4 on Debian 12 at present):-

    Settings->Appearance->Fonts has 'DPI', if I increase this everything
    gets bigger.

    Settings->Display has 'Scale', if I set this to (say) 0.8 everything
    gets bigger.

I can see these work slightly differently but what I'd really like to
know is which provides the better/sharper result.  Is there any
difference and/or are there other better ways to achieve what I want?


-- 
Chris Green
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