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Use Random User Agent Generator Online Free
This free online random user agent generator runs in your browser. No installation, no signup. Paste your input above and get instant results. Works on desktop and mobile.
How Random User Agent Generator Works
Paste or enter your input in the field above. Most tools update in real time. Click the Copy button to copy the output. All processing happens in your browser—your data never leaves your device unless the tool explicitly uses a server feature (such as URL shortening or bcrypt hashing).
This tool is part of the Generators category. Check similar tools below. All everytools are free, no signup required. Works on desktop and mobile.
Common Use Cases
- Simulate different browsers (Chrome, Firefox, Safari) when testing API responses
- Rotate user agents in web scraping to avoid detection and rate limiting
- Test responsive design by using mobile user agents (iPhone, Android)
- Verify bot detection by sending Googlebot or Bingbot user agents
Learn More
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Frequently Asked Questions
- What is a user agent?
- A user agent is a string that identifies your browser and operating system. Web servers use it to serve appropriate content. Example: Chrome on Windows sends a different user agent than Safari on Mac.
- Why use a random user agent?
- Developers use random user agents to test how websites respond to different browsers and devices. It helps ensure your site works across Chrome, Firefox, Safari, and mobile browsers.
- How to use user agent for testing?
- Generate a user agent, then set it in your HTTP client (cURL, fetch, Postman) or browser dev tools. Many API testing tools let you override the User-Agent header to simulate different clients.