Parse User Agent strings online. Identify browser, operating system, device type, and engine. Essential for web developers and debugging.
Raw User Agent String
What is User Agent Parser?
The User Agent Parser is a diagnostic tool that decodes the 'User Agent' string sent by your web browser. This string contains technical details about your browser version, operating system, and device type. Web servers use this information to serve the correct version of a website (e.g., mobile vs. desktop). This tool breaks down the complex string into human-readable fields, helping developers debug compatibility issues or verify how their device is being identified.
Input Formats
Auto-detects your UA
Custom UA string input
Output Results
Browser Name & Version
OS Name & Version
Device Type (Mobile/Desktop)
Rendering Engine
Key Features
Instant Analysis: Automatically detects and parses your User Agent
Detailed Breakdown: Reveals Browser, OS, Device Type, and Engine
Bot Detection: Identifies search engine crawlers and bots
Privacy: 100% Client-side processing
Debugging: Essential for fixing browser-specific issues
Spoofing Check: Verify if your browser is identifying itself correctly
Version Info: See exact version numbers for Chrome, Safari, etc.
Advanced & Free: The most advanced free user agent parser for developers
Shareable LinksShare the parsed details. (Limit: 1KB)
Who is this for?
Web Development
Debugging why a website looks wrong on a specific device.
Browser compatibilityResponsive debugUA string
Tech Support
Asking a user for their User Agent to understand their environment.
Support ticketSystem infoTroubleshooting
SEO
Verifying how Googlebot or other crawlers identify themselves.
Crawler IDBot detectionSEO audit
How to Use
1
Visit the page to see your current User Agent.
2
Or paste a User Agent string into the input box.
3
View the parsed details below.
Frequently Asked Questions
What is a User Agent?
It's a string of text your browser sends to websites to say 'Hi, I'm Chrome on Windows'.
Why is the string so messy?
History! Browsers pretend to be other browsers (like 'Mozilla') so old websites still work.
Can I change my User Agent?
Yes, developers do this to test how websites look on different phones or tablets.
Does it detect bots?
Yes! If you paste a Googlebot string, I'll tell you it's a crawler.
Is it secure?
Yes. I parse the string locally in your browser.
What is the 'Engine'?
It's the core code that draws the webpage. Chrome uses Blink, Firefox uses Gecko.
Is this useful for privacy?
Yes, it shows you exactly what device info you are sharing with every site you visit.
