Should I delete all cookies?

Focus on third-party and tracking cookies. Deleting first-party cookies logs you out of sites.

localStorage vs cookies?

Cookies are sent to servers with every request. localStorage stays in the browser for JavaScript access only.

Can sites read other sites' cookies?

No. Same-origin policy prevents this. But third-party cookies from embedded content can still track you.

Does clearing cookies stop tracking?

Partially. Trackers can re-identify via fingerprinting. Combine cookie clearing with fingerprint resistance.

Cookie Inspector

Free online cookie viewer and inspector. See tracking cookies, session data, and local storage that websites set in your browser.

Free online cookie viewer and inspector. See tracking cookies, session data, and local storage that websites set in your browser. Open the tool -- your cookies and storage are scanned automatically. Review cookies categorized as first-party, session, or tracking cookies. Check localStorage and sessionStorage for stored data including size estimates. Identify tracking cookies from known analytics domains and ad networks. Reads document.cookie, localStorage, and sessionStorage directly from your browser. Categorizes cookies by type and identifies known tracking domains. All inspection happens locally -- no data leaves your browser.