User Agent Parser
Analyze your browser's User Agent string
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Frequently Asked Questions
What is a User Agent string?
A text string sent by your browser identifying browser type, version, OS, and device to websites.
Can I change my User Agent?
Yes. Browser extensions or developer tools let you spoof your User Agent.
Why is User Agent important for privacy?
Your User Agent reveals browser, OS, and device info, contributing to browser fingerprinting.
Why do all browsers include 'Mozilla' in the User Agent string?
This is a historical artifact. Early websites served better content to Mozilla/Netscape, so other browsers added 'Mozilla' to their User Agent to receive the same content. The practice persisted.
Is User Agent spoofing detectable by websites?
Yes, partially. Websites can compare your User Agent string with JavaScript-detected browser features. Mismatches between claimed browser and actual capabilities reveal spoofing attempts.
What is a User Agent?
A User Agent is a string of text that your browser sends to every website you visit. It contains information about your browser, operating system, and device.
Websites use this information to optimize content for your specific browser and device, but it can also be used for tracking and fingerprinting.
Privacy Considerations
Your User Agent reveals a lot about your system. While this helps websites display correctly, it also makes you more identifiable.
To improve privacy, consider using browser extensions that randomize your User Agent or using privacy-focused browsers like Tor.