Shopify Google Ads is
missing 25% of your
purchases. Fix it free.

Three causes account for most Google Ads attribution gaps on Shopify in 2026: iOS Link Tracking Protection stripping gclid click IDs from URLs before customers open them in Safari, Mail, or Messages; Safari Intelligent Tracking Prevention (ITP) clearing attribution cookies before the purchase completes; and ad blockers preventing the gTag from loading. Server-side Google Enhanced Conversions fixes all three because events are sent from Shopify's server to Google directly, bypassing the browser.

Google Enhanced Conversions is Google's server-side conversion tracking supplement. It sends hashed first-party customer data — email, phone, name — alongside each conversion event via API. Google uses this to match conversions to signed-in Google accounts with greater accuracy, improving Smart Bidding and Performance Max optimisation even when cookies and gclid are blocked. For Shopify stores, it recovers 15–40% of purchase events that the browser-based gTag misses due to iOS and Safari restrictions.

The free two-layer approach: first, ensure the Google & YouTube sales channel is installed in Shopify for baseline browser-side tracking. Then add Google Enhanced Conversions via Make.com — create a Make.com free account, add a Webhooks module as the trigger, create a Shopify Order payment webhook pointing to your Make.com URL, add an HTTP module calling the Google Ads Conversions API endpoint, and hash customer email and phone with SHA-256. Full setup takes 6 minutes. No code, no GTM, no paid apps.

GCLID (Google Click ID) is the unique identifier Google appends to your ad URLs when someone clicks an ad — for example, ?gclid=CjwKCAjw8. Shopify's thank-you page uses this ID to attribute the purchase back to the specific Google Ads click. When iOS Link Tracking Protection or Safari ITP strips or clears the gclid, the conversion is unattributed. Google Enhanced Conversions supplements this by matching purchases via hashed email/phone to Google account data, recovering conversions even when gclid is lost.

No. The Make.com approach sends Google Enhanced Conversions events directly to the Google Ads Conversions API via HTTP request — no Google Tag Manager container required. GTM is one implementation route. Direct server-to-server API calls via Make.com are simpler and more reliable for Shopify stores because the entire flow operates without a browser.

Standard Google Ads conversion tracking fires a browser-based gTag when the order confirmation page loads. It fails when iOS or Safari blocks the gclid, when ad blockers prevent the gTag from loading, or when the browser session expires before the customer reaches the thank-you page. Google Enhanced Conversions supplements this by sending hashed customer data server-to-server, independently of browser state. Running both simultaneously gives Google the most accurate conversion picture.

If Google Ads reports significantly fewer conversions than Shopify shows orders for the same period, you are losing attribution due to iOS restrictions or ad blockers. The fix is server-side Google Enhanced Conversions via Make.com: create a Shopify Order payment webhook that sends purchase data — including hashed customer email and phone — directly to the Google Ads Conversions API from your server. This runs independently of browser behaviour and cannot be blocked by iOS or ad blockers.

Yes. Smart Bidding, Target ROAS, and Performance Max all optimise based on the conversion signals Google receives. When 25–40% of real conversions are invisible due to browser-based tracking failures, the algorithm is bidding on incomplete data — underbidding on high-intent traffic and over-bidding on low-converting segments. Completing conversion data with server-side Enhanced Conversions typically improves Smart Bidding performance within 14–21 days as the model relearns with full data.

Yes. Google Enhanced Conversions is designed to supplement — not replace — your existing conversion tags. The browser-side gTag continues to fire as normal. The server-side Enhanced Conversions layer adds hashed customer data on top. Google automatically deduplicates events using the order ID, so the same purchase is not counted twice. Running both layers together gives maximum conversion accuracy.

The complete free setup costs $0/month. The Make.com free plan (1,000 operations per month) covers Enhanced Conversions for stores processing under 500 orders per month. Above that, Make.com Core at $9/month covers 10,000 operations. Every paid alternative — Stape ($29+/month), Littledata ($99+/month), Analyzify ($99+/month) — charges a monthly subscription for the same server-side outcome Make.com delivers free.

All customer PII — email, phone, name — is hashed with SHA-256 inside Make.com before transmission to Google, as required by Google's Enhanced Conversions specification. The hashed data flows through your own Make.com workspace. Ensure your privacy policy discloses that hashed customer data is shared with Google for conversion matching purposes.