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UTM tracking

Criteo retargeting UTM tracking

Criteo runs retargeting and commerce display ads across the open web. Its destination URLs can carry UTM parameters so retargeting clicks are attributed to the campaign rather than to generic display referrals. This page gives a recommended structure and the retargeting-specific caution about crediting visitors who would have returned anyway.

Verified against primary sources

Recommended structure

Set the destination URL on the Criteo campaign and append UTMs. Use a retargeting-specific medium so you can separate it from prospecting display later.

The retargeting attribution caution

Retargeting reaches people who already visited, so last-click crediting can overstate it — some of those visitors would have returned without the ad. Tag the click so you can see it, but evaluate retargeting with incrementality in mind, not last-click volume alone.

Worked example:

https://example.com/cart?utm_source=criteo&utm_medium=retargeting&utm_campaign=cart-abandon&utm_content=dynamic-set

Distinguish from prospecting

If you also run Criteo prospecting (new-user) campaigns, give them a different utm_medium (e.g. display) so retargeting and prospecting do not merge. Mixing them hides that the two have very different value profiles.

How it appears in analytics and logs

A visit with utm_source=criteo and utm_medium=retargeting confirms a Criteo retargeting click. Without tags, these clicks scatter across publisher domains and are hard to total or to separate from prospecting.

Diagnostic use case

Attribute Criteo retargeting clicks to the retargeting campaign, and keep them distinct from prospecting display so you can judge incremental value.

What WebmasterID can help detect

WebmasterID attributes utm_source=criteo visits to your retargeting campaign server-side, so retargeting is one tidy channel rather than a spray of display referrers.

Common mistakes

Privacy and accuracy notes

Criteo UTM values should hold campaign and creative labels only — never any visitor identifier, even though retargeting targets prior visitors. UTM values are public; the audience match happens in Criteo, not in the URL.

Related pages

Sources and verification notes

Last reviewed 2026-06-24. Facts are checked against primary/official sources where available; uncertain specifics are marked “Data not yet verified” rather than guessed.