storage test
Local Storage Test
Use this when preferences, sessions, or offline settings disappear after refresh.
No accountLocal where possibleRetest anytime
Browser storage check
Ready to inspect browser storage.
This measures storage available to this website in your browser. It is not your SSD/HDD free-space or SMART-health status.
Private by design
DeviceOK writes one temporary test value and removes it immediately.
Use the result as evidence, not a guess.
This test checks
- localStorage write
- localStorage read
How to read it
A blocked result can come from privacy mode, policy, storage pressure, or browser settings.
Passing here does not guarantee another website has the same storage permission.