Google Analytics (GA4) Debug Checklist
Introduction
This checklist helps you verify that your Google Analytics (GA4) tag and events are correctly installed and sending data from your funnel pages before reaching out for support.
1. Check if the Google Tag Is Installed
Follow these steps to confirm your Google tag is present and active:
- Open your funnel page in Google Chrome.
- Right-click on the page and select Inspect.
- Navigate to the Network tab.
- Refresh the page.
- In the search or filter bar, type:
gtag/js collect.
Look for requests such as:
google-analytics.com/collectgoogle.com/ccm/collect
If you see these requests, your Google tag is installed and sending data. If you don’t see them, the tag may not be added correctly or could be blocked.
2. Use Google Tag Assistant (Recommended)
- Go to Google Tag Assistant.
- Enter your funnel domain.
- Start a debug session.
- Reload your funnel page.
Check for:
- A
page_viewevent - Any custom events you expect (e.g., form submission, button click)
If events appear, your tag is firing correctly. If no events appear, your tag may not be configured properly.
3. Confirm Data in GA4 Realtime
- Log in to your Google Analytics account.
- Select the correct GA4 property.
- Go to Reports → Realtime.
- Visit your funnel page or trigger the event.
If you see your visit or event in Realtime, data is successfully reaching GA4. If you don’t see it, possible reasons include:
- Incorrect Measurement ID
- Tag installed on a different domain
- Property mismatch
- Data filters blocking traffic
4. Check for Browser Errors
Open Inspect → Console and look for errors such as:
gtag is not defined- Script blocked errors
- Content Security Policy (CSP) errors
If you see errors, they may prevent tracking from working correctly.
When to Contact Support
Please contact support if:
- The tag appears installed but events are not firing.
- Events fire in Tag Assistant but do not appear in GA4.
- You see script or blocking errors you cannot resolve.