User Agent Generator
Generate browser User-Agent strings for Chrome, Firefox, Safari, and mobile devices.
UTM Campaign Parameter Builder
About User Agent Generator
The Comprehensive HTTP User-Agent String Generator creates realistic browser user-agent headers for modern Chrome, Safari, Firefox, Edge, iOS Safari, Android Chrome, and search engine crawler bots (Googlebot, Bingbot) for scraping and API testing.
How to Use User Agent Generator
Step 1
Select browser type, operating system, and device category (Desktop vs Mobile).
Step 2
Inspect the generated User-Agent string and matching Client Hints headers.
Step 3
Click "Copy User-Agent" to use in curl, Python Requests, or Puppeteer.
Practical Use Cases for User Agent Generator
Web Scraping & Headless Browser Automation
Generate authentic desktop and mobile browser User-Agent headers for Puppeteer, Playwright, and Selenium to avoid anti-bot blocks.
API & Mobile Responsive Layout Testing
Simulate iPhone, iPad, and Android browser User-Agent strings in Postman and curl requests.
Input & Output Examples
Generating Modern Chrome on macOS User-Agent
Browser: Chrome 124, OS: macOS Sonoma (Apple Silicon)
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36`
Key Features & Performance
- ✓Generates User-Agents for Chrome, Firefox, Safari, Edge, Opera across Windows, macOS, Linux, iOS, and Android.
- ✓Search bot presets: Googlebot Desktop, Googlebot Smartphone, Bingbot, DuckDuckBot, YandexBot.
- ✓Generates matching Client Hints (`Sec-CH-UA`, `Sec-CH-UA-Mobile`, `Sec-CH-UA-Platform`).
- ✓100% Client-Side generation.
- ✓1-Click Copy User-Agent string.
Key Terminology & Definitions
User-Agent (HTTP Header)
A request header string sent by web browsers identifying the application type, operating system, software vendor, and software version to the web server.
User-Agent Client Hints (UA-CH)
A modern privacy-preserving standard (`Sec-CH-UA`) replacing legacy User-Agent strings in Chromium-based browsers.