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UA

User Agent Parser

Detect browser, OS, and device.

Desktop
Browser
Chrome 120.0.0.0
Engine
Blink 120.0.0.0
OS
Windows 10 / 11
Device
Desktop

User-Agent strings are trivially spoofed and are being frozen or reduced by browsers. Prefer feature detection over UA sniffing.

About User Agent Parser

User-Agent parsing infers browser, OS, and device family from the UA header—useful for support logs and compatibility triage. Paste a UA into toco.tools for a readable breakdown computed entirely in the browser. Spoofing and frozen/reduced UA strings can mislead parsers; prefer feature detection for critical logic.

How to use

  1. Paste the User-Agent string
  2. Review browser and OS fields
  3. Copy or note the results

FAQ

What is a User Agent parser?

A tool that breaks down UA strings into browser, OS, and device hints.

Is the User-Agent sent externally?

No. All processing runs in your browser.

Can I parse my current browser UA?

If supported, you can load this browser’s UA into the parser in one click.