Bot & User-Agent Analyzer
Analyze bot signatures and browser identifiers without sending requests to other websites.
Analyze a User-Agent
Paste a User-Agent to inspect known crawler, automation and browser patterns.
Bot signaturesRecognizes selected crawler and automation patterns.
Browser informationShows browser-like and operating system identifiers.
No external lookupsChecks are processed locally on the BYB server without contacting the target website.
Page Description
A User-Agent is a client-supplied identifier. It can be changed or forged. Matching a known crawler name does not verify the sender, and no match proves neither safety nor risk.
Start a test
Enter a complete User-Agent string for local analysis.