HTTP Header Viewer
See every response header a URL returns, with what each one does and a security header audit.
URL
Server lookupOpen tool
Developer & Web
User Agent Parser
Read a user-agent string: browser, engine, operating system and device, with the honest caveats.
- Runs in your browser
- Works on mobile
- In: TEXT
- Out: TEXT
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Your files and text are processed on your own device, inside this page. Nothing is uploaded to Dubinity or stored, and closing the tab discards it. How privacy works
About User Agent Parser
Paste a user-agent string from a log - or start with your own - and see the browser, rendering engine, operating system, device type and whether it is a known bot or crawler.
Where the browser supports User-Agent Client Hints, the page also shows what those report, including the detailed hints your browser will only hand over when a site asks for them.
The caveats are shown with the answers, because they matter: Chromium now freezes parts of the string (minor version 0.0.0, "Android 10; K", macOS 10.15.7), privacy browsers deliberately send Chrome's string, and any client can send anything at all.
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