This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The NetworkInformation interface provides information about the connection a device is using to commuinicate with the network and provides a means for scripts to be notified if the connection type changes. The NetworkInformation interfaces cannot be instantiated. It is instead accessed through the connection property of the Navigator interface.


This interface also inherits properties of its parent, EventTarget.

NetworkInformation.type Read only
Returns the type of connection a device is using to communicate with the network. It will be one of the following values:
  • bluetooth
  • cellular
  • ethernet
  • none
  • wifi
  • wimax
  • other
  • unknown
NetworkInformation.downlinkMax Read only
Returns the maximum downlink speed, in megabits per second (Mbps), for the underlying connection technology.

Event handlers

The event that's fired when connection information changes and the change is fired on this object.


This interface also inherits methods of its parent, EventTarget.


Specification Status Comment
Network Information API
The definition of 'NetworkInformation' in that specification.
Editor's Draft Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 20 webkit 31.0 moz[1] No support No support No support
Feature Android Android Webview Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support No support 31.0 moz[1] No support No support No support No support

[1] The Network API can be disabled using the preference. From Gecko 12.0 to Gecko 30.0 included, this interface was called Connection and had different members. As of Gecko 12.0, the Network API is implemented for Android systems only. Support for Linux (bug 712442) and Windows (bug 721306) systems is in progress.

See also

Document Tags and Contributors

 Contributors to this page: jprichardson, teoli, jpmedley, Sebastianz, fscholz
 Last updated by: jprichardson,