User Agent Parser
Inspect browser and device details from user agent strings.
Inspect browser and device details from user agent strings.
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Tool guide
Free Online User Agent Parser
Parse a user agent string to inspect its likely browser, version, operating system, device type, and rendering engine. This browser-first user agent analyzer uses lightweight matching rules and presents best-effort results from the text you provide.
Steps
How it works
- Paste a user agent string into the input area.
- Run the parser in your browser.
- Review the detected browser, version, operating system, device type, and engine.
- Copy the JSON result or download it for later reference.
Highlights
Key features
- Recognizes common Chrome, Edge, Opera, Firefox, and Safari signatures.
- Reports broad Windows, Android, iOS or iPadOS, macOS, and Linux labels.
- Classifies the likely device as mobile, tablet, or desktop and unknown.
- Identifies broad WebKit or Blink, Gecko, and Trident engine signatures.
- Produces structured JSON that can be copied or downloaded.
Use cases
Common uses
- Inspect a user agent captured in an application log.
- Compare common browser and operating-system signatures during development.
- Check whether a string is likely associated with a mobile or desktop browser.
- Create a readable summary for debugging browser-specific reports.
Notes
Limitations to know
- User agent strings are self-reported and can be modified, reduced, or spoofed.
- Detection uses lightweight matching rules and is not a complete user-agent parsing library.
- The output does not include device vendor, model, CPU architecture, or bot detection.
- The tool does not auto-fill the current browser user agent.
- Results are not device fingerprints, security checks, or fraud assessments.
FAQ
Frequently asked questions
Which user agent details are extracted?
The tool reports a likely browser and version, operating system, device type, and rendering engine.
Can a user agent string be spoofed?
Yes. It is ordinary client-provided text, so the detected details should be treated as hints rather than verified facts.
Can it detect mobile devices?
It recognizes common mobile and tablet markers, but unusual or reduced strings may receive a broad or unknown classification.
Does it identify bots or exact device models?
No. Bot detection, vendor details, model names, and exact hardware identification are not implemented.
Does it inspect my current browser automatically?
No. Paste the user agent string that you want to analyze.