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User Agent Parser | Parse Browser, OS & Device Information Online Free
Parse user agent strings to identify browser name and version, operating system name and version, device type (mobile, tablet, desktop), device vendor and model, CPU architecture, and bot/crawler detection. Free user agent parser for developers, QA testers, and security professionals.
Key Features of Our User Agent Parser
- Browser Detection - Identify Chrome, Firefox, Safari, Edge, Opera, IE, and more
- Browser Version - Extract detailed version numbers
- Rendering Engine - Detect WebKit, Blink, Gecko, or Trident
- Operating System - Windows, macOS, Linux, Android, iOS detection
- OS Version - Detailed version information for each platform
- Device Type - Mobile, tablet, or desktop classification
- Device Vendor - Apple, Samsung, Google, Huawei, Xiaomi, OnePlus
- Device Model - Specific model detection like iPhone, iPad, Galaxy, Pixel
- CPU Architecture - x86, x64, ARM, ARM64 detection
- Bot Detection - Identify crawlers, spiders, and scrapers
- Copy Results - One-click copy of parsed information
- Example Strings - Pre-loaded examples for testing
- Use Current UA - Parse your own browser's user agent
- 100% Free - No registration or payment required
- Privacy Focused - All parsing happens in your browser
What is a User Agent String?
A User Agent (UA) string is a text string that web browsers and other applications send to web servers to identify themselves. It typically contains information about the browser name, version, operating system, device type, and rendering engine. User agent strings are used for analytics, content optimization, device detection, and debugging.
Why Parse User Agents?
- Analytics - Understand what browsers and devices your users are using
- Content Optimization - Serve device-specific content and layouts
- Debugging - Identify browser-specific issues
- Security - Detect bots, crawlers, and automated scripts
- Compatibility Testing - Verify browser and OS versions
- Traffic Analysis - Segment traffic by device type and platform
Supported Browsers
- Google Chrome - Version detection
- Mozilla Firefox - Version detection
- Apple Safari - Version detection
- Microsoft Edge - Version detection
- Opera - Version detection
- Internet Explorer - Version detection
Supported Operating Systems
- Windows - Versions XP through 11
- macOS - Version detection
- Linux - Desktop distributions
- Android - Version detection
- iOS - Version detection for iPhone and iPad
User Agent Parser
Parse user agent strings to identify browsers, operating systems, devices, and more. 100% free, secure, and works directly in your browser.
User Agent Parser
Enter a user agent string to extract browser, OS, device information.
Parsed Information
Browser
Operating System
Device
Additional Info
Browser Detection
Identifies Chrome, Firefox, Safari, Edge, and more.
OS Detection
Windows, macOS, Linux, Android, iOS, and more.
Device Info
Mobile, tablet, or desktop with vendor details.
Bot Detection
Identifies crawlers, bots, and spiders.
How to Use User Agent Parser
Enter UA String
Paste a user agent string or use your current browser's UA.
Parse
Click the parse button to analyze the user agent string.
View Results
See detailed browser, OS, and device information.
What is a User Agent?
A User Agent (UA) is a string that web browsers and other applications send to web servers to identify themselves. It typically contains information about the browser name, version, operating system, device type, and rendering engine.
Example: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
User agents can be spoofed or modified, so parsing results are based on pattern matching and may not be 100% accurate for all strings.
Frequently Asked Questions
What is a User Agent string?
A User Agent string is text sent by browsers and applications to identify themselves to web servers. It contains information about the browser, operating system, device, and rendering engine.
Why do I need to parse User Agents?
Parsing user agents helps with analytics, device detection, content optimization, and debugging. It allows you to understand what browsers and devices your users are using.
Is this parser 100% accurate?
Our parser uses pattern matching to identify common browser and OS patterns. While highly accurate for standard user agents, some custom or spoofed strings may not be correctly identified.
Is my data stored?
Absolutely not! All parsing happens directly in your browser. Your user agent strings never leave your device.
Can I use this tool offline?
Yes! Once the page loads, our User Agent Parser works completely offline. Perfect for when you don't have an internet connection.
Why Use Our User Agent Parser?
Completely Free
No hidden costs, no premium features - completely free forever.
Privacy First
All parsing happens locally - your data never leaves your device.
Detailed Results
Get comprehensive information about browsers, OS, and devices.
No Registration
Use instantly without creating an account.
User Agent Parser | Browser & OS Detector | Device Identifier
Supports: All major browsers • Desktop & Mobile OS • Device detection
Processing: 100% client-side • No data upload • Complete privacy
© 2026 iTools - Free Professional User Agent Parser