SitePrivacyScore
Free lightweight tool, no login required

Free Tracker Detector

Find out which analytics, advertising pixels, and session replay tools are watching visitors on any website.

Why Detect Trackers on Your Website?

Third-party trackers collect data about your visitors, their browsing behavior, device information, and even form interactions. While analytics tools like Google Analytics measure traffic, advertising pixels like Meta Pixel construct user profiles for retargeting.

Under privacy regulations like GDPR, CCPA, and ePrivacy, you are legally required to disclose these trackers in your privacy policy and, in many cases, obtain explicit consent before loading them. Knowing exactly which trackers are present is the first step.

Related Tools and Guides

Session Replay Detector, Focus on High-Scrutiny Replay ToolsCookie Scanner, Check Cookies Set by This SiteThird-Party Requests Analyzer, See All External ConnectionsRead Guide: Understanding Website TrackersRead Guide: Session Replay Tools and Privacy Risk

Run full privacy audit to detect runtime tracking and deeper compliance issues

This tracker scan only covers hardcoded first-load signatures. The full audit catches runtime tags, consent failures, cookies, and browser storage in one report.

Run full privacy audit to detect runtime tracking and deeper compliance issuesBrowse All Free Tools

For deeper runtime checks, run the full privacy audit →

Frequently Asked Questions

What is a web tracker?+
A web tracker is a piece of code, usually JavaScript or an invisible pixel image, embedded on a webpage by a third party. It monitors visitor behavior like page views, clicks, scroll depth, and sometimes form input. Common examples include Google Analytics, Meta Pixel, and Hotjar.
Is Google Analytics considered a tracker?+
Yes. Google Analytics collects visitor data including IP addresses, browser information, pages visited, and time on site. Under GDPR, it is classified as a non-essential tracking technology that requires explicit user consent before activation.
What is Meta Pixel and why does it matter?+
Meta Pixel (formerly Facebook Pixel) is an advertising tracker that collects data about your visitors and sends it back to Meta for ad targeting. It can track page views, purchases, and even form submissions. Loading it without consent is a GDPR violation.
Are trackers illegal?+
Trackers are not illegal by default, but regulations like GDPR, CCPA, and ePrivacy require that you inform users about them, include them in your privacy policy, and in most cases obtain explicit consent before loading them.
Why didn't this tool find a tracker I know is there?+
This free tool performs a server-side HTML source scan for known tracker signatures. Trackers loaded dynamically via tag managers (like Google Tag Manager) or conditionally via consent banners may not appear in the initial HTML. A full browser-based audit simulates real user behavior to catch these.