Is the User-Agent string sent anywhere?

No. Parsing uses local regular expressions in your browser. The string — including your own — is never sent to a server.

How accurate is the detection?

Detection uses an ordered set of regular expressions that test specific tokens before generic ones (for example Edge before Chrome). It is a best-effort parse, and User-Agents can be spoofed, so treat the result as a strong guess rather than proof.

Why is my browser shown as Safari or Chrome unexpectedly?

Many User-Agents intentionally include legacy tokens like "Safari" or "Mozilla" for compatibility, and embedded browsers reuse engine names. The parser reports the most specific match it can find from those tokens.

User-Agent Parser — Gera Tools

User-Agent parser

Break any browser User-Agent string into its browser, rendering engine, operating system and device type. The box is pre-filled with your own browser’s User-Agent so you can see exactly what your device reports.

Detection uses an ordered set of regular expressions — more specific tokens (like Edg/ or SamsungBrowser/) are tested before generic ones (Chrome/, Safari) so the result is the most precise match available.

Everything runs in your browser; no string is sent to a server. Remember that User-Agents are self-reported and can be spoofed, so the output is a best-effort interpretation.