BrowserInspector

Free · No signup · Nothing stored

Is your browser leaking?

Find out in one click. We'll show you exactly what websites can learn about you — and how to lock things down. No technical knowledge needed.

How does this work?

How it works

Three quiet steps. Nothing leaves your computer except a single, optional lookup of your IP — which any website you visit already has.

  1. You click "Check my browser"

    The check runs locally — open your browser's network tab and watch.

  2. We read 14 things any website can read

    Your IP, browser, screen, fonts, GPU signature, WebRTC behavior, and a few others.

  3. You get a friendly explainer for each

    What it reveals, why it matters, and a one-line fix you can do today.

Why this matters

A combination of just 8–10 of these signals is often enough to recognise your browser across different websites — even when you clear cookies, even in incognito mode. That's how data brokers and ad networks follow you. Step one is seeing what's visible.