web-feature: Server-sent events

baseline logo Widely available

The EventSource API creates a connection to a server and listens to a stream of events sent by the server.

WKWebView

macOS

*

iOS

*

Android WebView

Android

*

WebView2

Windows

*

Chrome Browser

Android

18

Safari Browser

iOS

5

Notes

Support data provided by: BCD logo

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This feature was last updated on November 10, 2025.