User Agent Generator
Free online User Agent Generator. Create custom UA strings for Chrome, Firefox, Safari, Edge, bots & mobile devices instantly. No signup required.
Updated May 2026
Ctrl+G to generate · Shift+Enter to copy
Click "Generate User Agent" to create a UA string
How to generate a user agent string
Pick a browser, OS, and device — get a valid UA in seconds
1. Choose browser, OS, and device
Select from Chrome, Firefox, Safari, Edge, Opera, Googlebot, or Bingbot, paired with Windows, macOS, Linux, Android, or iOS.
2. Generate — or use Randomize / Multi-Gen
Randomize picks a realistic combo for you; Multi-Gen outputs up to 50 strings at once for rotation pools.
3. Copy or download
Copy the string with one click, or download it as a `.txt` file for scripts and test pipelines.
What this user agent generator can do
Realistic UA strings for any browser, OS, and device combination
Batch generation with Multi-Gen
Create up to 50 user agent strings in one pass — enough for a rotation pool without repeating the process by hand.
Search engine bots included
Generate the exact Googlebot and Bingbot user agent strings, alongside every major desktop and mobile browser.
One-click Randomize
Randomize rolls a realistic browser, OS, and device combination instantly — no manual picking required.
Configurable device type
Switch between Desktop, Mobile, and Tablet — the platform token and mobile flag update automatically inside the string.
Example generated strings
When you'll need this tool
The most common scenarios among people who use it
Web scraping and automation
Rotating user agents helps avoid basic blocks from sites that reject generic or default request headers.
API and backend testing
Some APIs respond differently depending on the User-Agent header — reproduce those edge cases in staging before they surprise you in production.
Selenium and Playwright scripts
A custom UA stops headless browsers from being fingerprinted by sites that block default automation headers.
SEO and crawler testing
See exactly what Googlebot or Bingbot receive when they request your pages.
Common mistakes
Assuming a UA string alone defeats bot detection
Full fingerprinting relies on many signals beyond the User-Agent header — see the comparison below for what else is involved.
Using a fake UA to get around a site's terms of service
Sending a custom User-Agent is standard practice, but using it to bypass paywalls or access systems without authorization can be illegal depending on jurisdiction.
Forgetting to update the browser version
UA strings with outdated version numbers stand out from real traffic and are easy to flag as synthetic.
Why use this user agent generator
Multi-Gen produces up to 50 strings in a single click — most generators output one at a time, forcing you to repeat the process manually to build a rotation pool.
It covers search engine bots (Googlebot, Bingbot) alongside real browsers, which is useful both for scraping and for debugging how your site responds to search crawlers.
User agent vs. full browser fingerprint
The UA string is only one piece of what identifies a browser
Frequently asked questions
Most start with Mozilla/5.0, followed by a platform token in parentheses, then the rendering engine and browser token. Firefox uses Gecko/20100101 Firefox/X.Y; Chrome uses AppleWebKit/537.36 (KHTML, like Gecko) Chrome/X.Y.Z.W.
References
Related Tools
- User Agent Parser Developer Parse any user agent string instantly. Detect browser, operating system, device type, and rendering engine — free, online, no installation needed.
- HTTP Status Code Reference Developer Complete HTTP status code reference — all 1xx, 2xx, 3xx, 4xx, and 5xx codes explained with meanings, use cases, and SEO impact.
- JWT Decoder Developer Decode and inspect JSON Web Tokens instantly — view header, payload, verify HMAC signatures, and generate JWT code in PHP, JavaScript, Python, and Java.
- ASCII Table Generator Developer Free ASCII table generator — create plain-text tables in MySQL, Markdown, Unicode and more styles. Paste CSV or type data, copy output in one click. No signup.
- JSON Mock Data Generator Developer Generate realistic mock JSON data for testing and prototyping — users, products, orders, and custom schemas. Runs entirely in your browser.
