Browser
See browser info online
User-Agent, cookies and permissions. Useful when a site behaves oddly.
What this browser check can do
- Language and language list
- User-Agent and Client Hints
- Cookies, PDF viewer, legacy Do Not Track field
- Permissions: camera, mic, notifications, geo
- Storage quota and Cache API write
- Online status, vendor and one-click refresh
How to inspect the browser
Open the tool
Language, UA and flags appear immediately.
Check permissions
Statuses without prompting again.
Storage
Quota and a Cache API write test.
Refresh on demand
Press refresh to re-read permissions, storage and flags after changing settings.
Frequently asked questions
Why is a permission “unknown”?
Not every Permissions API name is supported in every browser — that’s expected.
What are Client Hints?
A modern replacement for the User-Agent string: browsers expose platform and version data as structured hints, and the tool lists what yours sends.
Why check the storage quota?
Web apps store data locally; the quota shows how much space your browser grants this site before evicting data.
Can this page read my history or passwords?
No. Browsers never expose history or credentials to pages — the tool only reads standard, permission-free browser properties.