What problem does it solve?
It helps you design a cohesive typography system that makes type choices consistent across surfaces by defining the typefaces, modular scale, and rhythm rules (line-height and measure) plus reliable web font delivery details.
Core Features & Use Cases
- Typeface + pairing rules: selects display/text/optional mono roles and documents when each face is justified.
- Modular type scale & tokenization: derives sizes from a single ratio and maps them to semantic tokens like display, heading-1, body, and caption.
- Typography mechanics for the web: sets line-height, letter-spacing, measure targets, and implements WOFF2 variable font delivery practices (subsetting and font-display swap) to reduce layout shift.
Quick Start
Design your typography system by defining up to three faces, deriving a modular scale from one ratio, setting vertical rhythm with consistent line-heights and baseline snapping, and specifying WOFF2 subsetting with font-display: swap for variable fonts.