web-feature: Portals

The <portal> HTML element embeds another page into the current page as a non-interactive preview.

WKWebView

macOS

*

iOS

*

Android WebView

Android

*

WebView2

Windows

*

WPE MiniBrowser

Linux

2026-08

Servo

Android

2026-08

ArkWeb

HarmonyOS

*

Chrome Browser

Android

*

Safari Browser

iOS

*