Paste an optional list of cookies you expect (one per line) and compare with what the browser exposes. This helps spot unexpected tracking cookies.
Cookie & GDPR Analyzer (local)
Reads cookies accessible via document.cookie and flags common tracking patterns.
No upload. Note: HttpOnly cookies are not visible to JavaScript.
Cookie analyzer: what it checks and how to interpret results
A cookie & GDPR analyzer helps you quickly review what your browser can read through
document.cookie. This is useful to spot common analytics or advertising identifiers, and to
compare them with an expected list (for example, cookies your consent banner should allow only after opt-in).
This tool uses simple local heuristics (keyword matching) to flag cookies that look like tracking or analytics identifiers. It also highlights cookies that are unexpected compared to your own list. Because it runs 100% in your browser, no cookie values are uploaded.
Keep in mind: many important cookies can be invisible to JavaScript (for example
HttpOnly cookies). A proper compliance review usually involves checking your consent platform (CMP),
tag manager setup, and documentation (privacy/cookie policy, consent logs).
What is this Cookie & GDPR Analyzer used for?
This Cookie & GDPR Analyzer is used to inspect cookies that are readable by your browser
via document.cookie and to highlight common patterns associated with
analytics or tracking technologies. It provides a quick, local overview of cookies
that may require user consent under GDPR rules.
Who is this tool useful for?
- Website owners checking what cookies are visible client-side
- Developers debugging consent banner or tag manager behavior
- Marketers reviewing analytics and advertising setups
- Privacy-conscious users wanting transparency about cookies
Concrete examples
- Checking whether analytics cookies appear before user consent
- Comparing expected cookies with actual readable cookies
- Spotting unexpected third-party tracking identifiers
Common mistakes to avoid
- ❌ Assuming this tool can see all cookies (HttpOnly cookies are invisible)
- ❌ Treating heuristic results as a legal compliance verdict
- ❌ Ignoring server-side or tag-manager-set cookies
The results are indicators only and should always be interpreted alongside a full consent and compliance review.
Limits and possible alternatives
This analyzer only inspects cookies that are accessible to JavaScript in the current
browser context. It does not analyze server logs, consent records, or third-party
requests made outside of document.cookie.
- Browser developer tools (Network & Application panels)
- Consent Management Platform (CMP) audits
- Professional GDPR compliance reviews
Educational summary
In summary, this Cookie & GDPR Analyzer helps you quickly understand which cookies are visible client-side and whether they resemble common tracking patterns. It is a useful educational and diagnostic tool, but it does not replace a full legal or technical audit.
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