I'm trying to figure out a comfortably legible base font-size for all screen sizes, on a platform that supports several languages. Anyone worked on a similar project? If so, what was your outcome and why? Thanks in advance for your help!

  • I highly recommed Richard Rutter's book on Web Typography. book.webtypography.net Have a look at things like vmin in CSS to be truly responsive.
    – kerr
    Commented Dec 1, 2017 at 5:53

1 Answer 1


The Web Content Accessibility Guidelines recommend that any web font sizes be adjustable by the user.

For large fonts WCAG says: "The actual size of the character that a user sees is dependent both on the author-defined size and the user's display or user-agent settings. For many mainstream body text fonts, 14 and 18 point is roughly equivalent to 1.2 and 1.5 em or to 120% or 150% of the default size for body text (assuming that the body font is 100%), but authors would need to check this for the particular fonts in use." -- https://www.w3.org/TR/2008/REC-WCAG20-20081211/

If large fonts are 14 pts, standard body font should be around 12 pts.


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