Conversion tracking is the foundation of every successful Google Ads campaign. Without it, you can’t measure how many leads or sales your ads generate—or whether you’re making a profit. In this detailed guide, you’ll learn step-by-step how to install and verify your Google Ads conversion tag manually, on WordPress (using Site Kit), and Shopify (via theme or integration).
Why Conversion Tracking Matters
Conversion tracking tells you exactly what’s working in your campaigns. You’ll see:
- Which keywords and ads generate real leads or sales
- How much you’re paying for each conversion
- Which audiences are driving the best ROI
- Where to scale your budget for maximum results
Google also uses this data to train its algorithm—helping you reach more people who are likely to convert, at a lower cost per acquisition.
Step 1: Choose Your Attribution Model
Before installing the tracking code, you’ll be asked to select your attribution model. This determines how credit is assigned to different ad interactions.
- Last Click: The final ad clicked gets full credit.
- First Click: The first interaction gets all the credit.
- Linear: Credit is split equally across all clicks.
- Data-Driven (Recommended): Google uses AI and user behavior data to assign credit intelligently based on each ad’s real contribution.
Recommendation: Always choose Data-Driven Attribution. It allows Google to analyze user behavior, cookies, and multiple touchpoints to provide the most accurate results—especially useful when running multiple ads that lead to the same offer.
Step 2: Enable Enhanced Conversions
Next, make sure Enhanced Conversions is enabled. This feature allows Google to collect hashed (anonymous) user data such as email and phone number from your website. It helps improve accuracy and privacy compliance under GDPR and CCPA.
Once enabled, scroll down, check the Enhanced Conversions box, and click Agree and Continue.
Step 3: Set Up Your Tracking Code
After confirming your settings, it’s time to install the tracking code. You’ll see two code snippets:
- Global Site Tag (gtag.js): This needs to be placed on every page of your website.
- Event Snippet: This goes only on the page that confirms a conversion—typically your “Thank You” page.
If you find this technical, you can email your developer directly from Google Ads with the “Send to webmaster” option—but if you want to do it yourself, follow the steps below.
Step 4: Install the Global Site Tag
✅ Option 1: If You’re Using WordPress
The easiest way to install the global tag is by using the Google Site Kit plugin. It automatically sets up Search Console, Google Analytics, and Ads tracking with a few clicks.
- Go to your WordPress dashboard → Plugins → Add New.
- Search for “Site Kit by Google” and install it.
- Follow the guided setup and connect your Google Ads account.
Once installed, your global tag is automatically added to all pages—no coding required.
✅ Option 2: If You’re Using Shopify
Shopify users can install the global tag either manually or via integration:
- In Shopify Admin, go to Online Store → Themes.
- Click Actions → Edit Code.
- Open theme.liquid and paste the Google global site tag before the closing </head> tag.
- Click Save.
Alternatively, you can connect Google Ads through the Google & YouTube App or Google Channel within Shopify. It will automatically handle tag installation and conversion syncing without needing manual code edits.
✅ Option 3: Manual Installation (Custom Sites, Wix, Squarespace)
If you’re using a different platform, simply paste the global site tag inside the <head> section of your site template or via a “Custom Code Injection” setting. This ensures the tag loads on every page.
Verify Your Tag:
Go to your website → right-click → select View Page Source → press Ctrl + F or Cmd + F → search for “gtag”. If it appears, your tag is correctly installed.
Step 5: Install the Event Snippet (Conversion Trigger)
Now, we’ll install the Event Snippet, which fires when a lead or sale happens—typically on the “Thank You” or confirmation page.
✅ WordPress (Elementor Example)
- Go to Pages → All Pages → open your Thank You page.
- Click Edit with Elementor.
- Drag a Shortcode or HTML block to the top of the page.
- Paste your Event Snippet inside and click Update.
✅ Shopify
Shopify makes this easy via checkout settings:
- Go to Settings → Checkout → Order Status Page.
- Scroll to Additional Scripts.
- Paste your Event Snippet there.
- Click Save.
Every time a customer completes a purchase or signup, this script triggers and sends data back to Google Ads.
Step 6: Test Your Conversion Tracking
- Go back to Google Ads.
- Select your conversion action → click Troubleshoot.
- Enter your Thank You page URL → click Connect.
If successful, you’ll see this message: “Website Lead Conversion Action Is Sending Data.”
Click Finish and your tracking setup is live!
Step 7: Verify the Setup
Once the tag fires correctly, you’ll see its status in Google Ads change from “Inactive” to “No Recent Conversions”. That means the tag is active and ready to track leads or sales.
From now on, every signup or purchase will be tracked automatically, giving you clear data on:
- Cost per lead or purchase (CPA)
- Total conversions per campaign
- Conversion rate by keyword or audience
Step 8: Optimize and Scale
With conversion tracking in place, you can now accurately measure ROI and optimize based on data—not assumptions. Over time, Google’s algorithm will identify high-value users and automatically allocate more budget toward what works best.
Pro Tip: After you collect at least 30 conversions in 30 days, switch your campaigns to Performance Max. This lets Google’s AI take over bidding and targeting for maximum efficiency across all channels (Search, YouTube, Display, Gmail, and Maps).
Final Thoughts
Setting up conversion tracking is the single most valuable step you can take before scaling your ads. Whether you’re using WordPress, Shopify, or a custom-built site, once tracking is installed, you’ll have the data you need to make every dollar of ad spend count.
Next step: Learn how to find the best-performing keywords and search terms that will trigger your ads for the right people—and start optimizing your campaigns for profitability.