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Cookies Dropped Detector
Scan your ad tag to detect all cookies dropped.
Check 32+ ad quality tests for ad performance — validate against IAB display ad guidelines
Cookies Dropped
This checks if the ad tag drops any cookies, particularly third-party cookies.
Why do we test it?
Many browsers and platforms now limit or block third-party cookies for privacy reasons. Ads that drop too many cookies, or non-compliant cookies, may face restrictions or reduced performance.