User-Agent Parser

Extract browser, OS, and device from UA strings

Parse User-Agent strings into browser, OS, and device fields — paste only, no outbound requests.

Also known as: parse user agent · user agent decoder · what browser is this · ua lookup

100% In-Browser & Private — your data never leaves this device
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How to use the User-Agent Parser

  1. Paste a User-Agent header value or click Use my browser to load this tab's UA.
  2. Review detected browser, engine, OS, and device type.
  3. Copy structured fields for logs or analytics debugging.

FAQ

Does this look up IP or geo data?
No — PeachTools only parses the UA string you paste for privacy.
Can I batch-parse many UAs?
Paste one per line to parse a list locally without uploading.
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