User Agent Strings — Reference

Reference pages covering common browser user agent strings and how to identify search engine and AI crawlers like Googlebot and GPTBot.

Every request a browser, app, or bot makes carries a User-Agent header identifying what sent it. These pages cover what real browser and crawler user agent strings look like, and how to tell a genuine one from an impostor.

UA Browser & Crawler User Agents What Chrome, Firefox, Safari, and common bots send Bot Identifying Googlebot, Bingbot & AI Crawlers How to verify a crawler and block or allow AI bots

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