web-feature: Resizable buffers

baseline logo Widely available in browsers but not in WebViews

The resize() method of an ArrayBuffer and the grow() method of a SharedArrayBuffer, constructed with the maxByteLength option, changes the size of the buffer in place.

WKWebView

macOS

*

iOS

*

Android WebView

Android

*

WebView2

Windows

*

Chrome Browser

Android

111

Safari Browser

iOS

16.4

Notes

Unsupported keys in WebViews

  • Android WebView:
    javascript.builtins.SharedArrayBuffer.SharedArrayBuffer.maxByteLength_option javascript.builtins.SharedArrayBuffer.grow javascript.builtins.SharedArrayBuffer.growable javascript.builtins.SharedArrayBuffer.maxByteLength

Support data provided by: BCD logo

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This feature was last updated on November 22, 2025.