Browser Tools
User-agent, cookies, and client diagnostics for debugging the web — 5 free tools, no signup required.
Browser Tools expose what your browser sends to websites: user-agent strings, cookie views, and diagnostics that help debug client quirks. Useful when a site behaves differently on Safari vs Chrome, or when you need to confirm what headers a kiosk browser is using.
All Browser Tools
Who these tools are for
- QA engineers reproducing browser-specific bugs
- Support teams collecting environment details
- Developers testing responsive or UA-based logic
How to choose
- Inspect user agent when a site serves the wrong experience
- Review cookies only on devices you own
- Combine with DevTools for network and console evidence
FAQ
Can these tools change my user agent?
Diagnostic tools typically display information. Changing UA usually requires browser settings or extensions.
Is cookie inspection safe?
Only inspect cookies on your own sessions. Do not share session cookies — they can hijack accounts.