A User-Agent string is a text identifier sent by browsers and crawlers with every HTTP request. It encodes the browser name, engine, OS, and device type. Our parser decodes it instantly without any API calls.
Parsing is done entirely in JavaScript within your browser. No UA strings leave your device — perfect for confidential debugging scenarios.
Easily identify Googlebot, Bingbot, AhrefsBot, and other web crawlers. The parser flags known bot patterns to help you verify crawler traffic.
Determine whether the source is a Desktop, Mobile phone, Tablet, Smart TV, or automated bot — critical for responsive design testing and analytics audit work.
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