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Browser User-Agent Inspector
See the live browser string and OS of the visitor.
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About Browser User-Agent Inspector
Inspect your current user-agent string, platform, resolution, and touch support. No uploads.
📐 Methodology & Reference Accuracy:
Calculations, formulas, and conversions execute locally in your web browser. Output models are benchmarked against official reference standards and updated for 2026.
🔒 This tool runs entirely in your browser. Nothing is uploaded or stored.
Background reading: User Agent Inspector on Wikipedia. More: all developer tools.
Frequently Asked Questions about Browser User-Agent Inspector
How do I use the Browser User-Agent Inspector?
Open the Browser User-Agent Inspector and use the controls in the workspace below: see the live browser string and os of the visitor. Results appear instantly in your browser, with nothing to install, sign up for, or pay for.
Is the Browser User-Agent Inspector free?
Yes. The Browser User-Agent Inspector is completely free, like every tool in the PrimeFreeTools library. There are no accounts, subscriptions, or usage limits.
Does the Browser User-Agent Inspector store or share my data?
No. The Browser User-Agent Inspector runs with JavaScript in your browser, so what you enter never leaves your device and nothing is stored on a server.
What can I use the Browser User-Agent Inspector for?
Inspect your current user-agent string, platform, resolution, and touch support. No uploads. You will find it grouped under Developer Tools together with 78 other free tools on the PrimeFreeTools homepage.
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Sep 9, 2026
User-Agent Inspector: Know Exactly What Your Browser Says
See the live browser string and OS of the visitor.
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