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What Is My User Agent?

Every request your browser makes carries a user agent string: a compact, historically messy line of text that names your browser, its rendering engine, and your operating system. This page shows yours in full and then breaks it into parts you can actually read, so you do not have to decode why Chrome still claims to be Mozilla and Safari at the same time. It is the fastest way to attach exact browser details to a bug report, confirm which browser build you are running after an update, or check what a site sees when you switch on a desktop-site or compatibility mode. The string is read from the request and from your browser, and it is only ever displayed back to you — copy it with one click.

Your user agent string

Reading your browser's user agent…

Read from your browser and shown only to you. Nothing is uploaded or logged.

Browser
—
Engine
—
Operating system
—
Device
—

How to use the what is my user agent

  1. Open the page — your full user agent string is displayed immediately.
  2. Read the breakdown to see the browser, engine, and operating system it reports.
  3. Copy the raw string to paste into a bug report or support ticket.
  4. Toggle your browser's desktop-site or device-emulation setting and reload to see the string change.

Frequently asked questions

Why does my user agent mention browsers I do not use?
For compatibility. Browsers have spent decades adding each other's tokens so that old sniffing scripts keep working, which is why Chrome announces Mozilla, AppleWebKit, KHTML, and Safari all at once.
Can I change my user agent?
Yes. Browser developer tools can override it, and extensions can spoof it permanently. Sites will then treat you as the browser you claim to be, which occasionally breaks things.
Is the user agent used to track me?
On its own it is a weak identifier, but combined with screen size, fonts, and time zone it contributes to browser fingerprinting. Browsers have been deliberately reducing user agent detail for this reason.
What are user agent client hints?
A newer, structured replacement that sends browser and platform details as separate headers, only when a site asks for them. Chromium browsers send them alongside a reduced, less detailed user agent string.

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