web-feature: System font

Widely available

The font-family: system-ui CSS declaration uses the operating system default font for text.

WKWebView

macOS

*

iOS

*

Android WebView

Android

*

WebView2

Windows

*

WPE MiniBrowser

Linux

2026-10

Servo

Android

2026-10

ArkWeb

HarmonyOS

*

Chrome Browser

Android

56

Safari Browser

iOS

11