User Agent Generator

Generate browser User-Agent strings for scraping, testing and automation.

What Is a User-Agent String?

Every request a browser makes includes a User-Agent header. It is a short line of text identifying the browser, rendering engine, and operating system, for example:

code

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Websites and APIs read this header to serve device-appropriate content, log analytics, or decide whether to block automated traffic.

What This Tool Generates

Choose a device type like Desktop, Mobile, or Random, optionally narrow it down by operating system and browser, and pick how many you need. Each result is built from a common browser/OS template with randomized version numbers, so a batch looks like traffic from a genuinely varied set of visitors instead of one repeated string.

Common Use Cases

Cross-browser testing — get a spread of User-Agent strings to test how a site or app responds across browsers and devices
QA and test fixtures — populate automated test suites with realistic header values
HTTP clients and scrapers — configure a request library to send a proper User-Agent instead of a default that flags it as a script

Using a Real User-Agent in Your Own Code

Geekflare tool generates randomized user agent batch for one-off use. If you're building a scraper or HTTP client that needs current User-Agent into your code, a library like ua-generator is a better fit for automatic generation at runtime.

Frequently Asked Questions

Yes. Choose a device type Desktop, Mobile, or Random, then optionally filter the results by operating system (Windows, macOS, Linux, Android, iOS) and browser (Chrome, Firefox, Edge, Safari). Leaving a filter empty includes all valid combinations for the selected device type.

Choose 5, 10, or 50 per batch. Each one is randomized independently, so you'll get a realistic mix of versions and devices rather than duplicates.

They're built from common browser/OS templates with randomized version numbers, so they're realistic but not guaranteed to match an exact live browser build. Look at this guide for current User-Agent strings.

Free to start · No credit card required

Need this at scale? Try the Geekflare API.

One API key for scraping, search, screenshots, DNS, PDF, and more.

Get Free API Key Read Documentation

bash

curl -X POST https://api.geekflare.com/webscraping \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url":"https://example.com"}'