A unique tracking tag that gets attached to a visitor when they click one of your ads — the thread that ties that click to whatever they do next.
When someone clicks a Google ad, Google quietly adds a code called a gclid to the web address. Meta does the same with an fbclid. Think of it as a coat-check ticket: it's a one-of-a-kind number that says "this exact person came from this exact ad click".
If you hold on to that ticket, you can later tell the platform "the person with this ticket became a customer".
A roofing company runs Google Ads. A homeowner clicks an ad and fills in a quote form — and the gclid is captured alongside their details. Three weeks later, after a site visit and a phone call, they sign a €9,400 contract. Because the gclid was saved, the company can send that €9,400 sale back to Google and say "this click led here". Google now knows that ad produced real revenue, not just a form fill — and goes looking for more homeowners like that one.
The click ID is what makes it possible to connect your real, off-website sales back to the ad that started them. Without it, the platforms only see clicks and form fills; with it, they see euros. That single thread is the difference between guessing which ads work and knowing — and it lets the algorithm spend your budget where the money actually is.
PipeValue sends the real value of every lead to Meta, Google, LinkedIn & TikTok — no data team.
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