Navigator: buildID property

Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

Returns the build identifier of the browser. In modern browsers this property now returns a fixed timestamp as a privacy measure, e.g. 20181001000000 in Firefox 64 onwards.

Value

A string representing the build identifier of the application. The build ID is in the form YYYYMMDDHHMMSS.

Examples

js
console.log(navigator.buildID);

Specifications

Not part of any public standard.

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
buildID
Non-standard

Legend

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Full support
Full support
No support
No support
Non-standard. Check cross-browser support before using.
See implementation notes.