Anonymity Checker

Network & Web, OSINT

Free
No Download/Install required
No registration

It analyses your browser visible specifications so as your connection details and evaluates your level of anonymity while browsing on internet. You’ll get a scoring so as the details for each tests.

Important:

the tool reports what it thinks to be; to trust its result, it is important you check against your real configuration … that only you know for sure.
you get a green score (0% or close to) with this tool when it analyses that you use no mean to hide. Depending on your need, it may be the opposite you are looking to.

Tip: it is to be used in conjunction with other tools listed on this directory: Fingerprint and Browser Header checker, as these are complementary.

Disciplines: Cybersecurity, Privacy, OSINT, Journalism.

Free alternative to BrowserLeaks, EFF Cover Your Tracks.

Anonymity Checker compared with BrowserLeaks and EFF Cover Your Tracks
Anonymity Checker	BrowserLeaks	EFF Cover Your Tracks
Output format: Returns a single anonymity score plus the detail of each test. A score close to 0% (green) means the tool detects no hiding mechanism, so a low value is not automatically good.	Output format: Returns separate reports per test (IP address, WebRTC leak, canvas, WebGL, fonts, TLS client, geolocation API, content filters, DNS leak among others). It gives raw findings to interpret, with no single score stated on its home page.	Output format: Returns a uniqueness result for the browser configuration, compared with a database of recently observed configurations, and a separate tracker blocking result.
Scope of the checks: Analyses browser visible specifications and connection details, so it mixes network exposure and browser attributes in one run.	Scope of the checks: The widest set of individual technical tests of the three, including experimental tools such as TCP/IP and HTTP/2 fingerprinting, QUIC and Client Hints tests. Useful to verify one specific leak path.	Scope of the checks: Focuses on two questions: do your tracker blockers stop simulated ad and beacon trackers and honour a Do Not Track domain, and how identifiable is your browser from attributes such as user agent, screen size, timezone, fonts, canvas and WebGL hashes.
Reading the result: Reports what it believes about your setup. The result has to be checked against your real configuration, which only you know, and combined with the Fingerprint and Browser Header checker tools.	Reading the result: Results are technical and need some networking and browser knowledge to interpret, for example telling a WebRTC leak from a normal local address.	Reading the result: The uniqueness score rests on an information theory model described on the site. It suits a non-specialist first assessment, then a deeper tool can follow.
	Operator and data handling: The page names no operator. It shows a copyright notice for 2011 to 2026 and states that third-party analytics may be temporarily active.	Operator and data handling: Run by the Electronic Frontier Foundation, launched in 2010 as Panopticlick and renamed Cover Your Tracks in 2020. It logs the collected browser information anonymously and uses anonymous results to compute uniqueness for other visitors.

Topics covered: Anonymity, Browser specifications, Connection details, Scoring, Privacy, Security, Fingerprinting, Data protection, Internet browsing, Configuration analysis, Tool evaluation, Complementary tools, ISO/IEC 27001, ISO/IEC 27002, ISO/IEC 29100, and NIST SP 800-53..

Privacy: we have no feedback of potential problem with this tool and author. But like many online services, you are here providing them with your own data. Depending of the criticity of your data, this is your responsibility to assess author's reputation and potential misusage, and to check and accept their terms and conditions, or not.