
116 Web Cartography: Map Design for Interactive and Mobile Devices
large your maps will appear on digital devices, which also has a direct
impact on the sizing of your fonts. This is a real problem with no end in sight.
One nice thing about standard computer displays only showing 72or96 ppi
was that Web developers generally had a good sense of how large things
would look on different devices. Enter the era of mobile devices (i.e., smart-
phones and tablets) with increasing resolutions, and suddenly a font that
appeared large enough on your home computer screen is now being read on
your friend’s 4-cm smartphone screen.
Font size can vary dramatical ...