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The Browser Privacy Inspector reads the signals your browser hands to every website — user agent, platform, screen, time zone, languages, storage, GPU and canvas fingerprints — and shows which of them can be used to identify or track you. Everything runs locally in your browser; nothing is uploaded.

What the tool does

The page performs one scan as soon as it loads. It reads only values the browser exposes to ordinary JavaScript: no extension, no permission prompt and no server are involved. Each finding is shown with a short explanation, so you can see not just what is revealed but why it matters.

Reading the colours

Every value carries a colour. Green means the signal is privacy-friendly — a requested opt-out that can only help you. Red means it is fingerprintable: a value that, alone or combined with others, helps a website recognise your device across visits. Grey is neutral or informational, such as whether the browser is currently online.

The signal groups

Findings are grouped into ten cards: Browser & engine (name, version and the full user-agent string), Operating system, Screen & display (resolution, viewport, pixel ratio, colour depth), Language & region (languages, time zone and UTC offset), Cookies & storage, Graphics & fingerprint, Network & media (connection type, WebRTC, media devices), Privacy signals (Do Not Track, Global Privacy Control, notification permission), Hardware (CPU cores, memory, touch points) and Other capabilities (service worker, WebAssembly, built-in PDF viewer).

Fingerprinting: canvas & WebGL

Two findings deserve special attention. WebGL can reveal the exact graphics card through the GPU vendor and renderer strings — one of the most identifying values a browser leaks. The canvas fingerprint draws a little text in a hidden canvas and hashes the result; tiny differences in fonts, GPU drivers and anti-aliasing make the hash very stable per device, so it works even when cookies are blocked. Both are shown here so you can see what a tracking script would see.

Summary and report

The summary card counts how many of the checked signals are fingerprintable and labels the overall exposure as low, moderate or high. From the Export report section you can download the full result as Markdown or JSON, or copy the Markdown to the clipboard — useful as evidence or to share a device profile. The report uses the same labels and language you see on screen.

Language and privacy

The interface is available in English, German, French, Italian and Spanish, chosen from the menu in the corner. Every value is read in your browser: nothing is uploaded, logged or stored, which is why the app is marked green (Local). The counter in the corner is the same anonymous hit counter every tool in the suite uses. Questions or suggestions? Use the Feedback link — it opens the suite contact form with the Browser Privacy Inspector pre-selected.

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