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Navigator: oscpu property

The Navigator.oscpu property returns a string that identifies the current operating system.

Value

A string providing a string which identifies the operating system on which the browser is running.

Operating system	`oscpuInfo` string format
OS/2	`OS/2 Warp x (either 3, 4 or 4.5)`
Windows CE	`WindowsCE x.y`
Windows 64-bit (64-bit build)	`Windows NT x.y; Win64; x64`
Windows 64-bit (32-bit build)	`Windows NT x.y; WOW64`
Windows 32-bit	`Windows NT x.y`
Mac OS X (PPC build)	`PowerPC Mac OS X version x.y`
Mac OS X (i386/x64 build)	`Intel Mac OS X` or `macOS version x.y`
Linux 64-bit (32-bit build)	Output of `uname -s` followed by `i686 on x86_64`
Linux	Output of `uname -sm`

In this table x.y refers to the version of the operating system

Examples

function osInfo() {
  alert(navigator.oscpu);
}

osInfo(); // alerts "Windows NT 6.0" for example

Usage notes

Unless your code is privileged (chrome or at least has the UniversalBrowserRead privilege), it may get the value of the general.oscpu.override preference instead of the true platform.

Specifications

Specification
HTML> # dom-navigator-oscpu>

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	WebView on iOS
`oscpu`	No	No	1 The preference `"general.oscpu.override"` can be used to set a value to be returned instead of the true CPU description. The preference setting is ignored for calls made by privileged code, which continue to get the actual CPU description.	No	No	No	4 The preference `"general.oscpu.override"` can be used to set a value to be returned instead of the true CPU description. The preference setting is ignored for calls made by privileged code, which continue to get the actual CPU description.	No	No	No	No	No

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https://developer.mozilla.org/en-US/docs/Web/API/Navigator/oscpu