What are cookies?
Cookies are small notes a site asks your browser to keep — login sessions, preferences, shopping carts. First-party cookies belong to the site you visit; third-party cookies belong to embedded services and are increasingly blocked by default.
What we test
We set a tiny first-party test cookie, write to localStorage and sessionStorage, then read them back — all on this page, all deletable. Nothing is sent anywhere. If a check fails, your browser is set to block it (private window defaults, “block all cookies”, or an extension).
How it works
Open this page and the embedded script queries only documented browser APIs. Nothing is installed, no account is needed, and results reflect your current browser profile — including extensions, private mode and OS display scaling.
Limitations
Support varies by browser. Privacy features (tracking prevention, user-agent reduction, fingerprint randomization) can generalize or withhold values. Treat results as a best-effort live snapshot rather than a certified hardware inventory.
Privacy
Detection runs in your browser. We do not store fingerprints or device reports. The only network call any tool makes is the optional public-IP lookup on /my-ip (via a third-party IP API, disclosed in the privacy policy).