What this tool does
User Agent Parser breaks browser user-agent strings into readable browser, OS, device, and engine clues.
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🕵️ User-Agent Parser
Parse browser name, version, operating system, device type, rendering engine, and bot/crawler signals from any user-agent string.
Limitations
This parser uses heuristic pattern matching, not a full UA database. Results may be inaccurate for unusual or spoofed user agents. For production analytics, consider a maintained library like ua-parser-js or a server-side database lookup.
Why it is useful
It helps developers debug compatibility reports, logs, analytics samples, and support tickets.
How it works
The browser parses the pasted user-agent string and highlights recognizable tokens.
Best input
Paste the full user-agent string from logs, headers, or browser diagnostics.
Debugging tip
Use feature detection for product behavior when possible; user-agent strings can be misleading.
Privacy note
Parsing happens locally in your browser.
Important limitation
User-agent strings can be spoofed, reduced for privacy, or ambiguous. They are clues, not proof of device capability.
Quick answers
Can user agents be fake?
Yes. Clients can modify or spoof them.
Should I rely on UA detection?
Prefer feature detection unless you are analyzing logs or support evidence.
Common Use Cases
Debug analytics and tracking data
Understand which browsers, devices, and operating systems your visitors are using.
Identify bot and crawler traffic
Check whether a user agent belongs to a search engine crawler, social media bot, or monitoring tool.
Test responsive breakpoints
Simulate different device user agents to verify your server-side device detection logic.
HTTP Developer Workbench workflow
Move between curl conversion, webhook testing, status-code reference, typed HTTP security diagnostics, redirect-chain analysis, status samples, MIME lookups, and user-agent parsing while keeping network behavior explicit.