captivePortal.canonicalURL

Return the canonical URL of the captive-portal detection page. Read-only.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxOperaFirefox for Android
canonicalURLChrome No support NoEdge No support NoFirefox Full support 72Opera No support NoFirefox Android No support No

Legend

Full support  
Full support
No support  
No support
Acknowledgements

This API is based on Chromium's chrome.tabs API. This documentation is derived from tabs.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.