extension.inIncognitoContext

Boolean value, true for content scripts running inside private browsing tabs and for extension pages running inside a private browsing process.

Syntax

let isPrivate = browser.extension.inIncognitoContext;  // true or false

Value

A boolean value indicate if the current script is running in a private tab or process.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxOperaSafariFirefox for Android
inIncognitoContextChrome Full support YesEdge Full support 17Firefox Full support 45Opera Full support YesSafari Partial support 14
Notes
Partial support 14
Notes
Notes Always returns false.
Firefox Android Full support 48

Legend

Full support  
Full support
Partial support  
Partial support
See implementation notes.
See implementation notes.
Acknowledgements

This API is based on Chromium's chrome.extension API. This documentation is derived from extension.json in the Chromium code.

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.