Typography-focused websites -- foundries, type specimen pages, and lettering studios -- place letterforms at the absolute centre of the design. These sites use generous type scales, interactive glyph testers, and carefully considered pairings to demonstrate the character and versatility of their typefaces.
Interactive type testers that let visitors set their own text at various sizes, weights, and styles are essential for evaluation. Specimen pages showing the typeface in realistic use cases -- editorial layouts, UI mockups, signage -- help designers envision how the font will perform in their projects.
Subsetting fonts to include only the characters needed for preview, lazy-loading heavier weights and styles on interaction, and using variable font files that contain an entire family in a single download all help manage page weight. Progressive loading ensures the page is usable before every style has arrived.