User-Agent Viewer
View and analyze your browser's user-agent string with detailed browser, OS, and device info.
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About User-Agent Viewer
How It Works
- Automatically detects your browser's user-agent string
- Parses and extracts meaningful information from the string
- Displays browser, version, operating system, and device type
- Provides copy functionality for easy sharing or debugging
- Works entirely in your browser without sending data anywhere
Common Use Cases
- Web development and browser compatibility testing
- Debugging website issues related to specific browsers
- Understanding your browser and system information
- Technical support and troubleshooting
- Analytics and user behavior analysis
- Security research and fingerprinting awareness
Frequently Asked Questions
What is a user-agent string?
A user-agent string is a text identifier that your web browser sends to websites to identify itself. It contains information about your browser type, version, operating system, and device type.
Why do websites need my user-agent information?
Websites use user-agent information to optimize their content and functionality for your specific browser and device, ensuring the best possible user experience and compatibility.
Is my user-agent information private?
User-agent strings are automatically sent to every website you visit as part of normal HTTP requests. This tool displays what information websites can already see about your browser.
How accurate is the browser and OS detection?
The detection is based on common patterns in user-agent strings and is generally accurate for major browsers and operating systems. However, some browsers may spoof or modify their user-agent strings.
Can I change my user-agent string?
Yes, most browsers allow you to modify your user-agent string through developer tools or browser extensions. However, this tool will always show your current browser's actual user-agent.
What browsers and devices does this tool recognize?
The tool recognizes major browsers like Chrome, Firefox, Safari, Edge, and Opera, as well as popular operating systems including Windows, macOS, Linux, Android, and iOS.
Why does my browser show as unknown?
If your browser appears as "Unknown", it might be a less common browser, a modified browser, or using a custom user-agent string that doesn't match the standard patterns this tool recognizes.
How can I copy my user-agent string?
Click the "Copy" button next to your user-agent string display. The full string will be copied to your clipboard for use in debugging, testing, or technical support.
What is device type detection used for?
Device type detection helps web developers understand whether users are on desktop, tablet, or mobile devices so they can provide appropriate responsive designs and touch-optimized interfaces.
Can this tool detect if I'm using a VPN or proxy?
No, user-agent strings don't contain information about VPN or proxy usage. This tool only shows browser and device information that's included in the standard user-agent string.