Check script running in Chrome’s developer console

Using the "Elements" Tab (Check Code Presence) 

This method searches the HTML for the tracking code snippet. 

  • Open DevTools: Right-click anywhere on the page and select Inspect (or Ctrl+Shift+I on Windows, Cmd+Option+I on Mac).
  • Search the Code: Click inside the Elements panel, then press Ctrl+F (Windows) or Cmd+F (Mac) to open the search bar.
  • Search for Keywords: Type one of the following, depending on the tool:

  1. GA4: G- (followed by your measurement ID) or gtag.
  2. Google Tag Manager: gtm.js or GTM-.
  3. Universal Analytics: UA-.
  4. Meta Pixel: fbq.

  • If the code exists, it will be highlighted in the HTML structure.

Using the Modern Tag Assistant Extension

This is the recommended approach for modern web-based debugging. 
  • Activate Troubleshooting:
  1. Click the extension icon in your browser toolbar and select "Troubleshoot tag".
  2. This will open tagassistant.google.com. Enter your website URL and click "Connect". 
  • Perform the Conversion: Your site will open in a new tab with a "Debugger Connected" badge. Go through the steps on your site to complete the conversion (e.g., fill out a form or make a purchase). 
  • Verify the Fire: Return to the Tag Assistant tab. On the left sidebar, click the event that represents your conversion (like a "Thank You" page load or button click).
  1. Under "Tags Fired", look for your Google Ads Conversion Tracking tag.
  2. Click the tag to see technical details like the Conversion ID and Label to ensure they match your Google Ads account.

Using Tag Assistant Legacy

  • Enable the Tag: Click the Tag Assistant Legacy icon and click "Enable", then refresh your webpage. 
  • Check Icon Color: Look at the icon color to see the status of the tags found on the page:
  1. 🟢 Green: Tag is working perfectly.
  2. 🔵 Blue: Tag is working but has minor suggestions (e.g., outdated script).
  3. 🟡 Yellow: Minor implementation issues found.
  4. 🔴 Red: Critical issue; the tag is not tracking correctly. 
  • Inspect Details: Click the icon, select the Google Ads Conversion Tracking tag, and click "Conversions" to view the specific ID and data sent to Google.