User-Agent Checker
Show your browser user-agent string and related flags.
User-Agent Checker displays the exact User-Agent string your browser sends, plus platform, language, and related navigator fields. Useful for debugging client detection — all local.
Frequently Asked Questions
Does my data leave the browser?
This tool runs in your browser. Nothing is uploaded to ToolWorld servers.
Why does my UA look strange?
Modern browsers often reduce or freeze the UA string for privacy. What you see is what sites receive.
Can I spoof the UA here?
This page only displays your current UA. Changing it requires browser settings or extensions.