BrowserSpy.dk shows you just how much information can be retrieved from your browser just by visiting a page.
Available tests are listed below.
Online / Offline Information
Find out if you're online or offline and how you connect to the internet. Also see if your browser support different kinds of storage such as localStorage, globalStorage and sessionStorage.
|Online / Offline mode|
|globalStorage test||Not available|
|localStorage test||Not available|
|sessionStorage test||Not available|
|Current network status||Unknown. Try switching between online and offline.|