typography-ref

Dynamic Type automatically scales text based on user settings. Apply system text styles (body, headline, caption) to your UI elements, and use SF font families with variable axes to enable smooth scaling across iOS, iPadOS, macOS, watchOS, and visionOS without manual breakpoints.

SF fonts are Apple's native typeface families with variable axes (weight, width, optical size) that optimize readability across sizes and contexts. Use optical sizes to automatically select the best letterform weight for display, body, or small text, and adjust axes programmatically for precise control.

Leading controls line spacing and tracking adjusts letter spacing to improve readability and visual hierarchy. Apple's typography reference maps leading and tracking rules to each system text style, ensuring consistent spacing across platforms and supporting accessibility without manual tweaking.

Localization-aware typography accounts for language-specific metrics: some scripts require wider letter spacing or different leading than Latin. The reference guides platform-specific adjustments for SF fonts and text styles across iOS, iPadOS, macOS, watchOS, and visionOS locales.

Yes. System text styles and SF fonts work across all Apple platforms, but each platform has specific rendering and sizing behavior. The reference covers platform-specific differences, including watchOS constraints and visionOS spatial typography, so you implement consistent design with platform-aware adjustments.