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View-Through Conversion Window Analysis

View-through conversion windows determine how long after an ad impression. Not a click. a conversion can still be attributed to that impression. AdLint flags configurations where the VTC window is either too long (likely over-attributing) or too short (likely missing genuine display- and YouTube-driven conversions).

CL
By Christopher LandaverdeCreator of AdLint · ad-tech tracking specialistUpdated

Why It Matters

View-through attribution is inherently weaker evidence than click-through attribution. The user saw the ad but did not engage with it, so the causal chain is more speculative. Google Ads defaults VTC windows to 1 day for most actions, which is conservative. Some accounts extend this to 7 or 30 days to capture more display-driven activity, but the longer the window, the more likely the attributed conversion would have happened anyway. The right setting depends on the role display and YouTube play in the funnel: brand campaigns benefit from a longer view-through window because their measurable impact is delayed; direct-response display benefits from a shorter window because the causality should be near-immediate.

How To Fix It

  1. In Tools & Settings → Measurement → Conversions, review the View-through window for each action.
  2. If the account is heavy on display or YouTube and uses the default 1-day window: consider extending to 7 days for awareness-stage actions, but never to 30+ unless you have a documented reason.
  3. If the account is search-heavy with display as a small share: the default 1-day window is appropriate.
  4. Annotate the change date. View-through-attributed conversion volume will adjust under the new window.

Example

Configuration
Action: Purchase
View-through window: 30 days (likely over-attributing)
Recommended: 7 days if display campaigns are awareness-focused, 1 day otherwise.
For Your Client Report

Google Ads conversion actions with view-through conversion windows that may misalign with the role display and YouTube play in the funnel. Google's view-through conversion documentation, VTC windows should reflect the realistic causal window for impression-driven conversions; over-long windows inflate display-attributed conversions through coincidental late attributions. Fix: align VTC windows to the campaign mix and document the choice in team materials. Source: support.google.com/google-ads/answer/2998563.

Drop this paragraph into your client deliverable. Sources back to the canonical platform documentation linked below.

References

  1. [1]Google Ads. About view-through conversions

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