Google Analytics 4 DebugView Not Showing Any Events or Debug Devices from React App

Question

I'm building a React app (using react-ga4) and trying to track pageviews/events with Google Analytics 4 (GA4). I want to verify events using the GA4 DebugView, but no events or debug devices ever show up, even after trying all the usual troubleshooting steps.

What I've tried:

Using ReactGA.initialize("G-XXXXXXXXXX") with my correct GA4 Measurement ID.
Sending pageviews with ReactGA.send("pageview") and also tried ReactGA.pageview(window.location.pathname)
Added window.dataLayer = window.dataLayer || []; window.dataLayer.push({ 'debug_mode': true }); before initializing GA.
Running the app on localhost:3000 (which should automatically enable debug mode).
Disabled all ad blockers and privacy extensions, tried incognito and multiple browsers.
Checked the Network tab: I see gtag/js loading, but never see g/collect requests.
Tried sending manual events in the console: window.gtag('event', 'test_event', { debug_mode: true }); Still nothing in DebugView.
Double-checked my Measurement ID matches the GA4 property.
Waited several minutes and refreshed DebugView. No errors in the browser console.

ReactGA.initialize("G-XXXXXXXXXX");
const App = () => {
    useEffect(() => {
        ReactGA.send({ hitType: "pageview", page: "/index", title: "Home" });
        ReactGA.event({category: "your category", action: "your action"});
    }, []);
}

Michele Pisani · Accepted Answer · 2025-05-20 13:30:46Z

0

Even if you put it in dataLayer.push, it is not sent in events if the library is not configured correctly because react-ga4 does not automatically send debug_mode: true.

Also, ReactGA.send(...) is not supported in GA4, it was used in Universal Analytics. You should use ReactGA.event(...) or ReactGA.gtag(...) for custom events.

answered May 20 at 13:30

Michele Pisani

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