Web/API/NetworkInformation

This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.

The NetworkInformation interface provides information about the connection a device is using to communicate 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.

Note: This feature is available in Web Workers.

Properties

This interface also inherits properties of its parent, EventTarget.

NetworkInformation.downlink Read only

Returns the effective bandwidth estimate in megabits per second, rounded to the nearest multiple of 25 kilobits per seconds.

NetworkInformation.downlinkMax Read only

Returns the maximum downlink speed, in megabits per second (Mbps), for the underlying connection technology.

NetworkInformation.effectiveType Read only

Returns the effective type of the connection meaning one of 'slow-2g', '2g', '3g', or '4g'. This value is determined using a combination of recently observed round-trip time and downlink values.

NetworkInformation.rtt Read only

Returns the estimated effective round-trip time of the current connection, rounded to the nearest multiple of 25 milliseconds.

NetworkInformation.saveData Read only

Returns true if the user has set a reduced data usage option on the user agent.

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

Event handlers

NetworkInformation.onchange

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

Methods

This interface also inherits methods of its parent, EventTarget.

Specifications

Specification	Status	Comment
Network Information APIThe definition of 'NetworkInformation' in that specification.	Draft	Initial definition

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
NetworkInformation Experimental'	Chrome Full support 61	Edge Full support 79	Firefox No support No	IE No support No	Opera Full support 48	Safari No support No	WebView Android Full support 50	Chrome Android Full support 38	Firefox Android Full support 31	Opera Android Full support 45	Safari iOS No support No	Samsung Internet Android Full support 3.0
downlink Experimental'	Chrome Full support 61	Edge Full support 79	Firefox No support No	IE No support No	Opera Full support 48	Safari No support No	WebView Android Full support 50	Chrome Android Full support 38	Firefox Android ?	Opera Android Full support 45	Safari iOS No support No	Samsung Internet Android Full support 3.0
downlinkMax Experimental'	Chrome Full support 61 Notes' Full support 61 Notes' Notes' Only supported in Chrome OS	Edge No support No	Firefox No support No	IE No support No	Opera No support No	Safari No support No	WebView Android Full support 50	Chrome Android Full support 38	Firefox Android No support No	Opera Android Full support 45	Safari iOS No support No	Samsung Internet Android Full support 3.0
effectiveType Experimental'	Chrome Full support 61	Edge Full support 79	Firefox No support No	IE No support No	Opera Full support 48	Safari No support No	WebView Android Full support 50	Chrome Android Full support 38	Firefox Android Full support Yes	Opera Android Full support 45	Safari iOS No support No	Samsung Internet Android Full support 3.0
onchange Experimental'	Chrome Full support 61	Edge Full support 79	Firefox No support No	IE No support No	Opera Full support 48	Safari No support No	WebView Android Full support 50	Chrome Android Full support 38	Firefox Android No support No Notes' No support No Notes' Notes' On Firefox, the event handler property corresponding to the change event is ontypechange.	Opera Android Full support 45	Safari iOS No support No	Samsung Internet Android Full support 3.0
ontypechange Experimental'	Chrome No support No	Edge No support No	Firefox No support No	IE No support No	Opera ?	Safari No support No	WebView Android No support No	Chrome Android No support No	Firefox Android ?	Opera Android ?	Safari iOS No support No	Samsung Internet Android No support No
rtt Experimental'	Chrome Full support 61	Edge Full support 79	Firefox No support No	IE No support No	Opera Full support 48	Safari No support No	WebView Android Full support 50	Chrome Android Full support 38	Firefox Android No support No	Opera Android Full support 45	Safari iOS No support No	Samsung Internet Android Full support 3.0
saveData Experimental'	Chrome Full support 65	Edge Full support 79	Firefox No support No	IE No support No	Opera Full support Yes	Safari No support No	WebView Android Full support 65	Chrome Android Full support 65	Firefox Android ?	Opera Android Full support Yes	Safari iOS No support No	Samsung Internet Android Full support 9.0
type Experimental'	Chrome Full support 61 Notes' Full support 61 Notes' Notes' Only supported in Chrome OS	Edge No support No	Firefox No support No	IE No support No	Opera No support No	Safari No support No	WebView Android Full support 50	Chrome Android Full support 38	Firefox Android No support No	Opera Android Full support 45	Safari iOS No support No	Samsung Internet Android Full support 3.0
Available in workers Experimental'	Chrome Full support 61	Edge Full support 79	Firefox No support No	IE No support No	Opera Full support 48	Safari No support No	WebView Android Full support 50	Chrome Android Full support 38	Firefox Android Full support 53	Opera Android Full support 45	Safari iOS No support No	Samsung Internet Android Full support 3.0

Legend

Full support  

Full support

No support  

No support

Compatibility unknown  

Compatibility unknown

Experimental. Expect behavior to change in the future.'

Experimental. Expect behavior to change in the future.

See implementation notes.'

See implementation notes.

See also

• Network Information API
• Online and offline events
• The Navigator interface that implements it.

NetworkInformation by Mozilla Contributors is licensed under CC-BY-SA 2.5.