Wonderstacked

Privacy

Tracker Scanner

A tracker scanner fetches a page server-side and reports which known analytics, advertising and social tracking domains appear in its HTML. It gives you an honest inventory of the third parties a site loads before you visit it, or a list of what your own site is leaking to others.

Last updated · Free, no signup

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What does a website tracker scanner find?

A tracker scanner fetches a public page and looks for domains associated with major analytics, advertising, and social-tracking services in its HTML. The inventory helps site owners audit third-party disclosure and lets visitors understand which external services are referenced before opening the page themselves.

The server checks the first 1 MB against a curated list of roughly two dozen tracker domains. It does not run page JavaScript, so consent-delayed, tag-manager-injected, first-party-proxied, or obfuscated requests can be missed. A detected domain shows a reference, not proof of the exact data collected or its legal basis.