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User-Agent Parser Online

Parse user-agent strings to identify browser family, operating system, rendering engine, device type, and raw user-agent details instantly. This tool is useful for debugging, logging analysis, QA investigation, and browser support checks.

Last updated: March 2026

User-Agent String

Browser

Device Type

Engine

Parsed Output

Ready to parse user-agent strings.

Fast • Free • Browser-Based

Inspect browser, OS, engine, and device details instantly

User-agent strings appear in analytics, logs, support tickets, bug reports, and client-side diagnostics. This parser helps you quickly understand which browser, operating system, device type, and rendering engine a request may be using.

✅ Browser detection

✅ OS detection

✅ Device type guess

✅ Use current UA

Helpful for debugging and support

User-agent parsing is useful when reviewing access logs, investigating browser-specific issues, validating client environments, or checking what kind of device a request likely came from.

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How to use this User-Agent Parser

Paste a user-agent string into the input field or load your current browser’s user-agent automatically, then run the parser to inspect the detected browser, OS, device type, and rendering engine.

Paste a user-agent string into the input box.
Or click Use My Current User-Agent.
Click Parse User-Agent.
Review the detected values and raw parsed output.

Example output

Browser: Google Chrome
OS: Windows 10/11
Device: Desktop
Engine: WebKit/Blink

Common use cases

Browser compatibility checks
Support ticket investigation
Log analysis
QA validation
Client environment review

What is a user-agent parser?

A user-agent parser is a tool that reads a browser user-agent string and breaks it into useful labels such as browser name, operating system, device type, and engine family.

User-agent strings are not always perfectly reliable, but they are still useful for debugging, support workflows, browser analysis, and general diagnostics.

Why use a user-agent parser?

User-agent parsers help turn long raw strings into readable information. That makes them useful when debugging browser issues, checking analytics traffic, reviewing logs, or understanding how a web request was likely made.

Browser insight: identify browser family quickly.
OS detection: understand the operating system.
Device context: estimate desktop, tablet, or mobile usage.
Debugging: speed up support and QA analysis.

Frequently Asked Questions

What can this parser detect?

It can estimate browser name, operating system, rendering engine, and whether the device looks like mobile, tablet, or desktop.

Can I use my current browser’s user-agent?

Yes. Click the button to load your current browser’s user-agent string automatically.

Are user-agent results always exact?

No. User-agent strings can be modified or incomplete, so parsed results are best treated as educated guesses.

Is this parser free?

Yes. This tool is completely free and works directly in the browser.

Who can use this tool?

Developers, QA testers, support teams, analysts, and anyone reviewing browser or log data can use this tool.