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Detect your browser, device, and system details instantly
This tool detects your browser and device information using JavaScript APIs available in your browser. No data is sent to any server -- everything is detected locally on your device. The information displayed includes your browser name and version, operating system, screen properties, hardware capabilities, and privacy settings.
Knowing your browser details is useful for troubleshooting website compatibility issues, verifying your privacy settings, checking if your browser is up to date, and understanding what information websites can see about your device. Web developers also use this information to debug cross-browser issues.
Every time you visit a website, your browser shares information like your User-Agent string, screen resolution, language preferences, timezone, and supported features. This is normal browser behaviour used for rendering pages correctly. However, this combination of data points can create a unique fingerprint, which is why privacy-conscious users consider using VPNs and privacy-focused browsers.
Go deeper
The calculator gives you the number. These SnoopTool guides explain the method, the assumptions and the decision — with worked examples, data tables and FAQs.
Browse all SnoopTool guides →Short, exact answers to the questions people ask alongside this tool — the number first, then the working.
For teams, not just visitors
We build the calculators on SnoopTool as embeddable widgets in your branding, wired to your own lead form — the same maths, your colours, your domain, your leads. Tell us which one and we will send back a working demo you can put in front of your team.
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