UtilityBaseDeveloper Tools
User Agent Finder
See your browser's user-agent string and a parsed breakdown of browser, OS, and engine — one-click copy.
Updated July 10, 2026
How to use the user agent finder
- 1Open the page — your user-agent appears automatically.
- 2Read the parsed browser, OS, engine, and device.
- 3Click Copy to grab the raw string.
- 4Paste it into a bug report or testing tool.
Common uses
- Attaching browser details to a bug report
- Checking which browser a device reports
- Testing user-agent-based behavior on a site
- Confirming your OS and engine version
Frequently asked questions
What is a user-agent string?
It's a line of text your browser sends to every website identifying the browser, its version, the rendering engine, and your operating system. Sites use it to serve the right layout, gather browser-share stats, and occasionally to warn about unsupported browsers.
Can the user-agent identify me personally?
Not on its own — it describes your browser and OS, not your identity. Combined with other signals it can contribute to fingerprinting, which is one reason browsers are freezing and simplifying user-agent strings for privacy.
Why does my user-agent mention browsers I don't use?
For historical compatibility, most strings include tokens like 'Mozilla' and 'Safari' even on Chrome or Edge. This tool parses past that legacy noise to report the browser you're actually using.
About this tool
The user agent finder shows the exact user-agent string your browser sends with every request, plus a clean breakdown of what it reveals: browser name and version, operating system, rendering engine, and device type. It also shows related details a site can read, like your language, platform, CPU cores, screen size, and touch support. Copy the raw string with one click for bug reports or testing. Everything is read locally from your own browser and nothing is sent anywhere.
Like most tools on UtilityBase, the user agent finder runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more developer tools here.
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