Glossary /
View-Through Conversion
Efficiency & cost
View-Through Conversion
Credit for a conversion the user never clicked on — and the single most inflated number in platform reporting.
Attribution & Measurement
Unit Economics
Data Governance & Nomenclature
Creative & Delivery
Audiences & Targeting
Mobile & Privacy
View-Through Conversion (VTC) is a conversion credited to an ad that was seen but never clicked, as long as the conversion happens within a set window after the impression. It's the most generous — and most disputed — form of attribution.
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What is View-Through Conversion?
A click-through conversion has a clear signal: the user engaged. A view-through conversion assumes the impression influenced the purchase even though the user took no action on it. The conversion just has to land within the platform's view-through window — which can range from a single day to multiple weeks. This is where reported results balloon. Platforms count an impression a user may have scrolled past in half a second, then claim the later purchase. On display and video especially, VTCs can multiply 'conversions' with little proof of causation. VTC isn't worthless — upper-funnel media genuinely influences buyers who never click. But it's wildly overcounted by the platforms that profit from it, and the windows differ so much across platforms that VTC numbers aren't comparable. Treat it with deep skepticism, and validate any VTC-heavy channel with an incrementality test before trusting its reported ROI.
How View-Through Conversion differs across ad platforms
Meta
Meta credits view-through conversions within its own window and counts an impression even when the user never engaged. It controls the window and the reporting, so VTC-heavy results skew in Meta's favor.
YouTube / Google display
YouTube and Google's display network lean heavily on view-through credit for video and banner impressions. With long windows and loosely defined 'views,' reported conversions can far exceed what the inventory actually caused.
Independent incrementality validation
Because VTC is so easily inflated, the honest check is an incrementality test run outside the platform. A holdout reveals how many of those view-through conversions would have happened with no ad at all — usually most of them.
Common View-Through Conversion misconceptions
A view-through conversion proves the ad caused the sale.
It proves only that the user saw the ad — possibly for a fraction of a second — before converting. There's no engagement signal and no causal proof. Many view-through 'conversions' would have happened with no ad at all.
View-through windows are standardized, so I can compare VTCs across platforms.
Windows vary widely — from one day to several weeks — and each platform defines a 'view' differently. That makes raw VTC counts non-comparable across platforms and easy to inflate by simply widening the window.
Related Terms
Frequently Asked Questions
What is View-Through Conversion in simple terms?
A view-through conversion is when a platform takes credit for a sale because the buyer saw your ad at some point — even though they never clicked it — and then converted within a set time window. It's credit for an impression, not an action.
How does View-Through Conversion work?
Why does View-Through Conversion differ across ad platforms?
How does Clarisights report on View-Through Conversion?
Attribution & Measurement
Unit Economics
Data Governance & Nomenclature
Creative & Delivery
Audiences & Targeting
Mobile & Privacy
View-Through Conversion (VTC) is a conversion credited to an ad that was seen but never clicked, as long as the conversion happens within a set window after the impression. It's the most generous — and most disputed — form of attribution.
?
?
What is View-Through Conversion?
A click-through conversion has a clear signal: the user engaged. A view-through conversion assumes the impression influenced the purchase even though the user took no action on it. The conversion just has to land within the platform's view-through window — which can range from a single day to multiple weeks. This is where reported results balloon. Platforms count an impression a user may have scrolled past in half a second, then claim the later purchase. On display and video especially, VTCs can multiply 'conversions' with little proof of causation. VTC isn't worthless — upper-funnel media genuinely influences buyers who never click. But it's wildly overcounted by the platforms that profit from it, and the windows differ so much across platforms that VTC numbers aren't comparable. Treat it with deep skepticism, and validate any VTC-heavy channel with an incrementality test before trusting its reported ROI.
How View-Through Conversion differs across ad platforms
Meta
Meta credits view-through conversions within its own window and counts an impression even when the user never engaged. It controls the window and the reporting, so VTC-heavy results skew in Meta's favor.
YouTube / Google display
YouTube and Google's display network lean heavily on view-through credit for video and banner impressions. With long windows and loosely defined 'views,' reported conversions can far exceed what the inventory actually caused.
Independent incrementality validation
Because VTC is so easily inflated, the honest check is an incrementality test run outside the platform. A holdout reveals how many of those view-through conversions would have happened with no ad at all — usually most of them.
Common View-Through Conversion misconceptions
A view-through conversion proves the ad caused the sale.
It proves only that the user saw the ad — possibly for a fraction of a second — before converting. There's no engagement signal and no causal proof. Many view-through 'conversions' would have happened with no ad at all.
View-through windows are standardized, so I can compare VTCs across platforms.
Windows vary widely — from one day to several weeks — and each platform defines a 'view' differently. That makes raw VTC counts non-comparable across platforms and easy to inflate by simply widening the window.
Related Terms
Frequently Asked Questions
What is View-Through Conversion in simple terms?
A view-through conversion is when a platform takes credit for a sale because the buyer saw your ad at some point — even though they never clicked it — and then converted within a set time window. It's credit for an impression, not an action.
How does View-Through Conversion work?
Why does View-Through Conversion differ across ad platforms?
How does Clarisights report on View-Through Conversion?
See Viewable Impression across every channel in one report
See Viewable Impression across every channel in one report
See viewability and vCPM across every platform—display, video, programmatic— in one normalized report, instead of reconciling vendor numbers by hand.
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