User Agent Generator
Generate browser user agent strings for desktop, mobile, or tablet — for test fixtures, device detection, and scraper configuration. Same device parameter as the User Agent Generator API.
- Runs in your browser
- No sign-up
- Free API available
- Same result as
- User Agent Generator API
- Category
- Data Generation
- Cost
- 1 credit / call
- This page
- 100% client-side
Try it — no sign-up
Realistic user agent strings, by device.
Device
How many5
120
Output
Generate realistic user agent strings for testing, scrapers, and device-detection fixtures — the same device parameter the API takes.
Everything runs locally in your browser — nothing is uploaded. Need it in your app? Use the User Agent Generator API.
What is a user agent string?
It's the identifier a browser sends with every request, describing the browser, its version, and the operating system. Servers read it to decide what to send back — a mobile layout, a desktop one, or a specific fallback.
What are these useful for?
Test fixtures for device-detection code, seeding analytics in a staging environment, and configuring HTTP clients that need to identify themselves plausibly. Generating a realistic string is much easier than remembering the exact format.
Are these real user agent strings?
They follow the exact formats real browsers send, built from the same templates — Chrome, Firefox, Safari, Edge, and Samsung Internet across Windows, macOS, Linux, Android, and iOS. Version numbers are drawn from a plausible current range.
Can I get the parsed browser and OS too?
The API returns the string alongside parsed fields — browser name, version, major version, and operating system — plus the rendering engine on paid plans. That saves writing your own parser.
Does this send anything to a server?
No. The strings are assembled from templates in your browser, so nothing is transmitted or logged.