The redirect that erased every click ID
A Thrissur real-estate developer’s Google Ads showed almost no conversions, even though the sales team logged plenty of site-visit bookings from ads.
Their landing page redirected from http to https and dropped everything after the “?”, so the GCLID never reached the page or the form.
Fixing the redirect to keep URL parameters brought conversions back the same day, and offline imports from the CRM started matching.
Illustrative example based on a common pattern in Kerala e-commerce accounts. Numbers rounded.
What the GCLID is
When auto-tagging is on, every ad click gets a GCLID in the URL. The Google tag (with Conversion Linker in GTM) stores it in a first-party cookie for up to 90 days.
When that person converts on your site, the tag sends the conversion with the GCLID. For offline conversions, your CRM stores the GCLID with the lead and uploads it later with the sale.
Ad click → ?gclid=… in URL → stored in cookie → sent with conversion or CRM upload
GCLID check
Check that GCLIDs survive from click to CRM.
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Click IDs you may see
| Parameter | Where from |
|---|---|
| gclid | Google Ads clicks (most traffic) |
| gbraid / wbraid | Google Ads clicks from iOS under Apple’s privacy rules |
| fbclid | Clicks from Facebook and Instagram |
How experienced marketers use Auto-tagging (GCLID)
1. Accurate Google Ads conversions
Conversions can only be attributed to the right click when the GCLID is stored.
2. Offline conversion imports
Send qualified leads and sales from the CRM back to Google Ads using the GCLID.
3. Diagnose missing conversions
If test clicks arrive without ?gclid in the URL, something is stripping it.
What good looks like
| Business type | Starting rule | Why |
|---|---|---|
| Cookie window | Up to 90 days | Matches the longest click-through window. |
| Leads with GCLID | Most Google Ads leads | If many are blank, capture is broken. |
| Offline import window | Within 90 days of the click | Older conversions are rejected. |
When the number lies
- Manual UTMs overriding
- Adding manual UTMs to Google Ads final URLs can override auto-tagged data in GA4.
- Consent denied
- Clicks from people who decline cookies may not store a GCLID; enhanced conversions help fill gaps.
Mistakes to avoid
Turning off auto-tagging
GA4 loses Google Ads detail and offline imports can’t match.
Redirects that drop parameters
No GCLID reaches the page, so conversions go missing.
Not saving the GCLID in the CRM
No way to send real sales back to Google Ads.
Related terms
Questions people ask about the GCLID
What does GCLID mean?
Google Click Identifier: a unique ID added to your URL for each Google Ads click when auto-tagging is on.
Does GCLID affect SEO?
No, as long as your pages have a canonical tag pointing to the clean URL.
How long does a GCLID last?
The Google tag stores it in a cookie for up to 90 days, matching the longest conversion window.
What are gbraid and wbraid?
Privacy-safe click IDs Google uses for some iOS traffic instead of GCLID.
Put it into practice
- SOP 332: Send Zoho CRM Qualified Leads and Sales Back to Google Ads →
- SOP 025: Google Ads Conversion Tracking: Set It Up with Google Tag Manager →
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