The CryptoKey.extractable read-only property that indicates if the raw material key can be extracted, for example for archiving it.


result = key.extractable

Return value

  • result is a Boolean indicating if the key can be extracted.


Specification Status Comment
Web Cryptography API
The definition of 'CryptoKey.extractable' in that specification.
Recommendation Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support37 Yes34 No ? No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support3737 Yes34 ? No ?

See also

Document Tags and Contributors

 Contributors to this page: fscholz, erikadoyle, teoli
 Last updated by: fscholz,