Random User-Agent Generator
Generate realistic, current user-agent strings for Chrome, Firefox, Safari and Edge across desktop and mobile. Useful for testing responsive sites and rotating UAs while scraping.
About this tool
A user-agent string is the line your browser sends with every request to identify itself — the browser, its version, and the operating system and device. A random user-agent generator produces realistic, plausible UA strings on demand, which is handy for testing how a site behaves for different browsers and for rotating identities during web scraping.
Why rotate user-agents?
When scraping, sending the same default user-agent on thousands of requests is an obvious bot signal. Rotating through realistic UA strings — paired with rotating proxies — makes your traffic blend in with ordinary visitors. A fresh IP with a stale or fake-looking UA still stands out, so the two go together.
Realistic, not random gibberish
The generator uses current browser and OS version patterns so the strings look genuine. Generate one or many at a time and copy them straight into your test suite or scraper configuration.
Frequently asked questions
It is text a browser sends in the User-Agent HTTP header to identify the browser, its version, and the operating system and device. Servers use it to tailor responses and, sometimes, to detect bots.
For testing how a website renders across browsers and devices, and for web scraping — rotating realistic user-agents (alongside rotating proxies) helps requests look like normal users instead of a single bot.
No. The user-agent is just one signal. Your IP address, TLS and browser fingerprint and other headers also identify you, so a UA change alone does not provide anonymity — see our browser fingerprint tool.
They follow current, realistic browser and OS version patterns so they appear genuine to servers, but they are generated examples rather than captured from a specific real device.