User Agent Parser
Paste any browser user-agent string to see the browser, version, operating system and device type it describes — or load your own browser's string with one click. Useful for developers debugging compatibility issues or checking how a site reads your browser.
How to use
- Paste a user-agent string, or click Use my browser UA.
- Click Parse.
- Read the browser, OS, device and engine results.
Note: Detection uses ordered pattern matching — brand tokens are checked before generic ones because most browsers include several product names in one string. A UA string can be spoofed, so treat results as a hint, not proof.
Good to know
- Most UA strings list several products at once — the tool checks brand tokens before generic ones.
- A UA string can be faked, so treat results as a hint, not proof of identity.
- Loading your own string with one click is the fastest way to test your current browser.
- Developers use this to reproduce bugs seen only on specific browser versions.
Frequently Asked Questions (FAQ)
What details does the user agent parser find?
It detects the browser and version, operating system, device type and rendering engine from a user agent string.
Can I parse my own browser string?
Yes, the Use my browser UA button loads your own browser user agent string with one click.
What is a user agent string?
A short text your browser sends to every website, naming the browser, version, operating system and device. This tool reads that text and breaks it into those parts.
How accurate is the detection?
The parser uses ordered pattern matching, checking brand tokens before generic ones because most browsers list several product names. A user agent string can be spoofed, so treat results as a hint, not proof.