An online tool to view and parse browser User-Agent strings in real time
This tool displays your current browser's User-Agent string and automatically parses it into structured information including browser name, version, rendering engine, operating system, and device type. It also supports parsing custom UA strings. All operations run locally in your browser.
Features
Real-time display of current browser User-Agent
Auto-parse browser name, version, and engine
Identify operating system name and version
Detect device type, vendor, and model
Support for custom UA string parsing
One-click copy of UA string
Runs entirely in your browser
How to Use
1Open the page to automatically view your current browser UA
2Click the copy button to copy the UA string
3Paste a custom UA string into the input field
4Click Parse or press Enter to parse the custom UA
FAQ
What is a User-Agent?
A User-Agent is an identifier string that browsers send with requests to servers. It contains information about the browser name, version, operating system, and device. Servers use the UA to identify the client type and return appropriate content.
Why would I need to view my User-Agent?
Developers often need to check and verify User-Agent strings when debugging site compatibility, testing responsive designs, or simulating different device access. Regular users can also use it to confirm their browser is effectively identified.
How accurate is the parsing?
This tool uses the well-established ua-parser-js library, which covers mainstream browsers, operating systems, and devices. For uncommon browsers or custom UAs, some fields may show as "Unknown".
Is my data sent to a server?
No. All parsing is done locally in your browser with no server dependency. Your UA information never leaves your device.
Why does the version number differ from my browser settings?
The version number in the User-Agent string may differ from what your browser's "About" page shows, because the UA uses the engine version rather than the full browser version. This is normal.