The operating system the browser is running on.

Type

Values of this type are strings. Possible values are:

"mac"
The underlying operating system is Mac OS X.
"win"
The underlying operating system is Windows.
"android"
The underlying operating system is Android.
"cros"
The underlying operating system is Chrome OS.
"linux"
The underlying operating system is Linux.
"openbsd"
The underlying operating system is Open/FreeBSD.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxOperaFirefox for Android
Basic supportChrome Full support YesEdge No support NoFirefox Full support 45Opera Full support YesFirefox Android Full support 48

Legend

Full support  
Full support
No support  
No support

Acknowledgements

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

Document Tags and Contributors

Contributors to this page: chrisdavidmills, wbamberg
Last updated by: chrisdavidmills,