Best User Agent Generator Tools

A user agent string identifies your browser, operating system, and device to web servers. Developers use random user agents to test how their APIs and websites respond to different clients—Chrome on Windows, Safari on iPhone, Firefox on Linux, and more.

Here are the best free user agent generator tools you can use online.

1. everytools Random User Agent Generator

Our Random User Agent Generator creates realistic browser user agent strings instantly. Generate Chrome, Firefox, Safari, Edge, and mobile user agents. Copy and paste into your HTTP client, Postman, or cURL command. No signup, no limits.

2. User Agent Parser (Complementary Tool)

When you have a user agent string and need to understand it, use our User Agent Parser. It extracts browser name, version, OS, and device type. Useful for debugging and analytics.

3. cURL Parser for API Testing

Combine user agents with our cURL Parser to convert browser requests to cURL, fetch, or Python. Add a custom User-Agent header for testing different clients.

Use Cases

• API testing: Simulate different browsers and devices
• Scraping: Rotate user agents to avoid blocks
• QA: Verify responsive design and device detection

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