Third-party cookies are small text files placed on a user’s browser by a domain other than the one they are currently visiting. They are primarily used for cross-site tracking, enabling advertising networks, analytics platforms, and social media widgets to follow users as they browse different websites.
When a user visits a site that contains a third-party advertising script, that script sets a cookie from the advertiser’s domain. As the user visits other sites with the same script, the advertiser can build a profile of their browsing behaviour. This mechanism powers retargeting, frequency capping, and multi-touch attribution in digital advertising.
Major browsers have moved aggressively to restrict or eliminate third-party cookies. Safari and Firefox already block them by default, and Google Chrome has been working to deprecate them through its Privacy Sandbox initiative.
The ePrivacy Directive and GDPR require explicit consent before setting non-essential cookies, including third-party cookies. This shift forces businesses to rethink their tracking, analytics, and advertising strategies, moving toward first-party data, server-side tagging, and privacy-preserving measurement techniques.
Seers.ai helps businesses navigate the transition away from third-party cookies by providing a consent management platform that supports both traditional cookie consent and emerging alternatives. With server-side tagging and Google Consent Mode v2 integration, Seers enables you to maintain marketing effectiveness while respecting user privacy.
The platform’s cookie scanning automatically identifies third-party cookies on your site, helping you evaluate which are essential and which can be replaced with privacy-friendly alternatives.
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