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WebAssembly Import/Export of Mutable Globals

An extension to WebAssembly import and export of mutable global variables

Last updated on : 2026-02-09

Browser Versions

IEIE

EdgeEdge

FirefoxFirefox

ChromeChrome

SafariSafari

OperaOpera

5.5 - 11
Test on IE 5.5 - 11 ...
12 - 18
Test on Edge 12 - 18 ...
79 - 144
Test on Edge 79 - 144 ...
2 - 60
Test on Firefox 2 - 60 ...
61 - 150
Test on Firefox 61 - 150 ...
4 - 73
Test on Chrome 4 - 73 ...
74 - 147
Test on Chrome 74 - 147 ...
3.2 - 11.1
Test on Safari 3.2 - 11.1 ...
12 - 26.3
Test on Safari 12 - 26.3 ...
9.5 - 58
Test on Opera 9.5 - 58 ...
60 - 125
Test on Opera 60 - 125 ...

...Fully Supported

...Partially

...No Support

Browser Compatibility

WebAssembly Import/Export of Mutable Globals on IE is not supported on any IE versions.

WebAssembly Import/Export of Mutable Globals on Edge is fully supported on 79-144, and not supported on 12-18 Edge versions.

WebAssembly Import/Export of Mutable Globals on Firefox is fully supported on 61-150, and not supported on 2-60 Firefox versions.

WebAssembly Import/Export of Mutable Globals on Chrome is fully supported on 74-147, and not supported on 4-73 Chrome versions.

WebAssembly Import/Export of Mutable Globals on Safari is fully supported on 12-26.3, and not supported on 3.2-11.1 Safari versions.

WebAssembly Import/Export of Mutable Globals on Opera is fully supported on 60-125, and not supported on 9.5-58 Opera versions.

WebAssembly Import/Export of Mutable Globals on Safari on iOS is fully supported on 12-26.3, and not supported on 3.2-11.3 Safari on iOS versions.

WebAssembly Import/Export of Mutable Globals on Android Browser is fully supported on 123-144, and not supported on 2.3-4 Android Browser versions.

WebAssembly Import/Export of Mutable Globals on Opera Mobile is fully supported on 80-80, and not supported on 10-12 Opera Mobile versions.

WebAssembly Import/Export of Mutable Globals on Chrome for Android is fully supported on all Chrome for Android versions.

WebAssembly Import/Export of Mutable Globals on Firefox for Android is fully supported on all Firefox for Android versions.

WebAssembly Import/Export of Mutable Globals on Samsung Internet is fully supported on 11.1-29, and not supported on 4-10.1 Samsung Internet versions.

Browser Support for WebAssembly Import/Export of Mutable Globals

References

Data sourced from

88
Hightooltip

Overall Browser Compatibility Score

Note:WebAssembly Import/Export of Mutable Globals shows a browser compatibility score of 88. This is a collective score out of 100 to represent browser support of a web technology. The higher this score is, the greater is the browser compatibility. The browser compatibility score is not a 100% reflection for every browser and the web technology support. However, it does give you an estimate on how much you should rely on a particular web technology in terms of browser compatibility.

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