BrowserScan is an independent project offering a growing collection of free tools that reveal what your browser, device and connection disclose to the websites you visit. Our aim is simple: to turn something invisible and technical into something anyone can see and understand.
Why we built this
Every time you open a web page, your browser quietly shares a surprising amount of information — your rough location, your device, your software, and a rendering signature that can single you out from millions of others. Most people never see any of it. We wanted to change that by putting the same measurements trackers use into plain, honest tools that report back to you instead of to an advertiser.
What we make
Our tools fall into three families, and you can browse them all on the tools page:
- Browser tests — including our flagship browser fingerprint test, user agent, screen and hardware readouts.
- Network tests — your IP address, connection details and a WebRTC leak test.
- Privacy tests — cookies, font detection, ad-blocker and Do Not Track checks.
Alongside the tools we publish a blog that explains the concepts behind them in clear, jargon-free language.
Our privacy principle
The tools here are designed to run entirely in your browser. The whole point of BrowserScan is respecting your privacy, so it would make no sense to harvest your data in the process. Almost every test computes its result locally and sends nothing anywhere. The only deliberate exception is the IP address lookup, which by its nature must ask an external service what your public address is — and we label that clearly on the tool itself. For the full detail, see our privacy policy.
How we stay free
Every tool here is free, with no accounts, paywalls or sign-ups, and there are no ads anywhere on the Site — no ad network, no ad slots, no advertising cookies. There is nothing to dismiss, and nothing quietly watching the page while you work. That is a deliberate choice: a site that measures what your browser gives away should not be giving things away itself.
Get in touch
We welcome questions, corrections and suggestions for new tools. Head to our contact page to reach us — feedback from people who care about privacy is exactly what makes these tools better.