WebTool

User-Agent Parser

Free online User-Agent parser: break any UA string into browser, version, OS, device type and engine — local parsing.

Privacy: all processing happens locally in your browser. Your input never leaves your device.

What is User-Agent Parser?

The User-Agent is the string a browser uses to introduce itself — compatibility adaptation, traffic analytics and anti-scraping rules all depend on it. This tool parses a UA into structured fields: browser and version, operating system, device type (phone / tablet / desktop) and rendering engine. On page load it parses your current browser's UA by default. Parsing is done locally.

How to Use

  1. Open the page to parse your current UA automatically (or paste another UA string)
  2. View the structured parse result

FAQ

Why does Chrome's UA still mention Safari and Mozilla?
Historical compatibility: to avoid being discriminated against by old sites, every browser stacks Mozilla/WebKit/Safari tokens into its UA; parsers identify the real browser by characteristic rules.
Can the UA be forged?
Yes — browser developer tools can modify it freely, so servers should never make security decisions based on the UA alone.

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Last updated 2026-09-04