Method 1: DevTools network – the 100% working method
Control+Shift+J, devtools
Go to Network
In the table columns, right click, make sure “Domain” is checked off
Reload the page
Try to find google-analytics or similar in domain request
If you see it, it means analytics is installed
This works 100% of time, because browsers need to load google analytics for the tracker to work. So if it does not load, it means the tracker is not installed.
Method 2 : View Source (Does not always work, but is faster if you are lazy)
This works 70% of the time.
Go to view source, search for text “UA-”
You will likely see analytics code. If you see, then it is installed.