User-Agent Parser
Parse a User-Agent string to identify browser, OS and device.
Browser
Chrome 120.0.0.0
Operating System
macOS 10.15.7
Device
Desktop
Engine
WebKit 537.36
Private & SecureRuns in your browser — nothing is uploaded
Easy to UseJust paste or type — instant results
Free ForeverUnlimited use, no sign-up
Fast & ReliableAdvanced tech, fast and stable
A User-Agent string is the dense line a browser sends to identify itself, and it has grown into a thicket of names and version numbers that hides the one detail you actually want. Paste one in and this pulls out the browser, its version, the operating system and the device type in plain language.
How to use: User-Agent Parser
- 1Enter inputPaste the User-Agent string into the input box.
- 2Set optionsThe tool automatically parses out the browser, version and rendering engine.
- 3ProcessReview the detected operating system and device type.
- 4Get resultCopy the parsed result for log analysis or compatibility checks.
Common use cases
Read your own UAQuickly see which browser and OS version a request claims to be.
Debug from logsTake a User-Agent out of a server log and find out what was really visiting.
Check device typeTell whether a visit came from a phone, tablet or desktop when a bug only shows on one.
Test detection logicFeed sample strings to confirm your own browser-detection code reads them as you expect.
Good to know
User-Agents can lieThe string is sent by the client and is trivial to fake, so treat it as a hint, never as proof of who is visiting.
They are deliberately messyFor history reasons most browsers still carry words like Mozilla and Gecko that have nothing to do with them; the parser sorts out what matters.
Versions are being frozenFor privacy, modern browsers increasingly freeze or trim the version they report, so the number can be less precise than it once was.
Prefer feature checksTo decide what a browser can do, testing for the feature itself is more reliable than parsing the User-Agent.