gx-detect

How-to for detecting GX browser on the web page.

Scenario

You would like to determine if a site is being visited through Opera GX.

That would allow e.g. to decide if a user should see some additional/exclusive content when a page is being visited using Opera GX.

How to check if a browser is Opera GX?

The way of checking whether the browser in Opera GX is to call from page scripts:

window.navigator.userAgentData?.toString().indexOf('[object NavigatorUAData]') === 0 && window.navigator.userAgentData?.brands?.some(item => item.brand == "Opera GX")

That statement returns true if the browser is Opera GX - otherwise it will return false.

Examples

Example page with Opera GX detection GX detection example

Note

Running other browser with overridden --user-agent will change the user-agent in the headers of outcoming requests but won't change the window.navigator.userAgentData object.