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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.
Candidate Recommendation Initial definition.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support 37 (Yes) 34 (34) No support ? No support
Feature Android Chrome for Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) 37 (Yes) 34.0 (34) No support ? No support

See also

Document Tags and Contributors

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