Geometric sans-serifs (Futura, Circular) are built from geometric shapes. Grotesque and neo-grotesque designs (Helvetica, Aktiv Grotesk) have more uniform strokes. Humanist sans-serifs (Gill Sans, Source Sans) incorporate calligraphic influences, offering warmth alongside clarity.
Sans-serif typefaces render clearly at all sizes on screens, offering excellent legibility for both body text and UI elements. Their clean forms reduce visual noise in already complex interfaces, and their neutrality allows them to work across diverse content types and brand personalities.