Case Study

Impact Estimates proves Secure Signals drives 6% revenue uplift for Heureka Group

Google Ad Manager

Heureka Group operates multiple high-traffic product comparison websites across Central Europe, including heureka.sk and heureka.cz, helping users decide between quality and price.

The challenge

Heureka Group needed to validate the impact of Secure Signals on their business performance and determine if the solution was necessary to maintain their revenue and impression growth.

The approach

Heureka Group used Google Ad Manager impact estimates to conduct an automated test on their highest-traffic websites. By splitting traffic to compare performance with and without Secure Signals on heureka.sk and heureka.cz, they confirmed the tool's efficacy. Improved data matching for advertisers fueled revenue and impression gains, which directly drove the observed uplift.

The results

  • 6%
    Overall revenue lift
  • 4%
    Overall impression increase
  • 2%
    eCPM improvement

“We validated through Google Ad Manager that Secure Signals delivers a 6% overall revenue lift and improved eCPM through better advertiser data matching.”

— Vojtech Novak, Programmatic Specialist from, Heureka Group

  1. Ad Manager reporting data 2026. Individual results may vary.

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