Free User Agent Generator - Generate Browser User Agents Online

Generate up to 100,000 realistic browser user agents for Chrome, Firefox, Safari, and Edge. Perfect for web scraping, testing, automation, and development. Download instantly as .txt file with authentic Mozilla/5.0 format.

Generated User Agents

Note: Preview shows only first 50 entries. Full list downloads to .txt file. All user agents begin with Mozilla/5.0 for maximum compatibility.

🔧 What is a User Agent Generator?

A User Agent Generator is a free online tool that creates realistic browser user agent strings for Chrome, Firefox, Safari, and Edge browsers. Our user agent generator produces authentic Mozilla/5.0 format strings that include current browser versions, operating systems (Windows, macOS, iOS, Android, Linux), and device information for maximum compatibility with websites, APIs, and web scraping projects.

Whether you need fake user agents for testing, random user agents for automation, or browser user agents for development, our tool generates up to 100,000 realistic user agent strings instantly. Perfect for web developers, QA testers, and automation engineers who need authentic browser identification strings.

✨ Why Use Our Free User Agent Generator?

Browser user agents are essential for web scraping, testing, and automation. They help you simulate different browsers and devices, test responsive designs, bypass basic bot detection, and ensure your applications work across various platforms. Our user agent generator creates authentic user agents that closely mimic real browser behavior for maximum success rates.

Generate Chrome user agents, Firefox user agents, Safari user agents, and Edge user agents with realistic version numbers and operating system information. Perfect for web scraping projects, browser testing, and automation scripts that need to appear as legitimate browser traffic.

🌐 Popular User Agent Types We Generate

Chrome User Agents

Generate realistic Chrome user agents for Windows, macOS, and Linux with current version numbers (97-118). Perfect for web scraping and automation that needs to appear as Chrome browser traffic.

Mobile User Agents

Create authentic mobile user agents for iPhone, iPad, and Android devices. Includes iOS Safari and Chrome Mobile user agents with realistic device identifiers and OS versions.

Firefox User Agents

Generate Firefox user agents with Gecko engine identifiers for Windows, macOS, and Linux. Includes realistic version numbers and platform information.

Random User Agents

Get random user agents mixing PC and mobile devices for maximum diversity. Perfect for rotation in web scraping scripts and automated testing scenarios.

🎯 How to Use the User Agent Generator

  • Select your preferred device type: PC Only, Mobile Only, or Random mix
  • Enter the number of user agents you need (1 to 100,000)
  • Click "Generate" to create authentic user agent strings
  • Preview the first 50 results in the output area
  • Download the complete list as a .txt file for your projects
  • Use the generated user agents in your testing or development workflow

🚀 Key Features

  • Generate up to 100,000 user agents in seconds
  • Authentic Mozilla/5.0 format for maximum compatibility
  • Support for PC, Mobile, and Random device types
  • Realistic browser versions (Chrome, Firefox, Safari, Edge)
  • Current operating systems (Windows 10/11, macOS, iOS, Android, Linux)
  • Batch download as .txt file for easy integration
  • No registration required - completely free to use
  • Privacy-focused - all processing happens in your browser

💼 Common Use Cases

Web Development & Testing

Test your websites across different browsers and devices without needing physical hardware. Simulate various user environments to ensure compatibility.

API Testing & Automation

Use realistic user agents in your API requests to avoid basic bot detection and ensure your automated scripts behave like real browsers.

Web Scraping Projects

Rotate user agents in your scraping scripts to appear more natural and reduce the likelihood of being blocked by anti-bot measures.

Browser Compatibility Testing

Simulate different browser versions and operating systems to test how your web applications perform across various environments.

⚙️ Technical Details

Supported Browsers

  • Chrome: Versions 97-118 with realistic build numbers
  • Firefox: Versions 97-118 with Gecko engine
  • Safari: Latest versions for macOS and iOS devices
  • Edge: Chromium-based versions with authentic formatting

Operating Systems

  • Windows: Windows 10 and 11 (64-bit)
  • macOS: Recent versions including Big Sur and Ventura
  • iOS: iPhone and iPad with current iOS versions
  • Android: Popular devices with Android 12 and 13
  • Linux: Generic Linux and Ubuntu distributions

💻 Code Examples

JavaScript/Node.js Example

const userAgents = [ 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36...', 'Mozilla/5.0 (iPhone; CPU iPhone OS 16_6 like Mac OS X)...' ]; // Rotate user agents in requests const randomUA = userAgents[Math.floor(Math.random() * userAgents.length)]; fetch('https://api.example.com/data', { headers: { 'User-Agent': randomUA } });

Python Example

import random import requests user_agents = [ 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36...', 'Mozilla/5.0 (iPhone; CPU iPhone OS 16_6 like Mac OS X)...' ] # Use random user agent headers = {'User-Agent': random.choice(user_agents)} response = requests.get('https://api.example.com/data', headers=headers)

PHP Example

$userAgents = [ 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36...', 'Mozilla/5.0 (iPhone; CPU iPhone OS 16_6 like Mac OS X)...' ]; $randomUA = $userAgents[array_rand($userAgents)]; $context = stream_context_create([ 'http' => [ 'header' => "User-Agent: $randomUA\r\n" ] ]); $response = file_get_contents('https://api.example.com/data', false, $context);

❓ Frequently Asked Questions

Are the generated user agents realistic?

Yes! All user agents follow authentic browser patterns with realistic version numbers, operating systems, and device information. They're designed to closely mimic real browser behavior.

Can I use these user agents for web scraping?

While the tool generates realistic user agents, always ensure you comply with website terms of service and robots.txt files. Use responsibly and respect rate limits.

How often should I rotate user agents?

For testing purposes, rotate user agents between requests or sessions. For production use, consider the specific requirements of your application and target services.

Do all user agents start with Mozilla/5.0?

Yes, all modern browsers use the Mozilla/5.0 prefix for compatibility reasons. This ensures maximum compatibility with web services that check user agent strings.

Is there a limit to how many I can generate?

You can generate up to 100,000 user agents at once. The tool processes them in batches to maintain performance and shows a preview of the first 50 results.

Are the user agents updated regularly?

The generator uses current browser version ranges and operating systems. While specific versions may become outdated, the patterns remain realistic and functional.

Can I customize the user agent format?

Currently, the tool generates standard user agents for maximum compatibility. For custom formats, you can modify the downloaded list or use it as a starting point.