NetworkInformation

Instance 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

Instance methods

This interface also inherits methods of its parent, EventTarget.

Events

change: The event that's fired when connection information changes.

Specifications

Specification
Network Information API # networkinformation-interface

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`NetworkInformation`	Chrome – Full support Chrome 61 (Release date: 2017-09-05) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox 31 – 31 (Release date: 2014-07-22) footnote Removed in 32 and later	Opera – Full support Opera 48 (Release date: 2017-09-27) footnote Full support	Safari – No support Safari footnote footnote See bug 185697	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android 31 – 98 (Release date: 2014-07-22) footnote Removed in 99 and later	Opera Android – Full support Opera Android 25 (Release date: 2014-10-16) footnote Full support	Safari on iOS – No support Safari on iOS footnote footnote See bug 185697	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 50 (Release date: 2016-04-13) footnote Full support	WebView on iOS – No support WebView on iOS footnote footnote See bug 185697
`change` event	Chrome – Full support Chrome 61 (Release date: 2017-09-05) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 48 (Release date: 2017-09-27) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android footnote footnote On Firefox, the event handler property corresponding to the `change` event is `ontypechange`.	Opera Android – Full support Opera Android 45 (Release date: 2018-02-15) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 50 (Release date: 2016-04-13) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`downlink`	Chrome – Full support Chrome 61 (Release date: 2017-09-05) footnote footnote The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote footnote The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.	Firefox – No support Firefox footnote No support	Opera – Full support Opera 48 (Release date: 2017-09-27) footnote footnote The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote footnote The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 25 (Release date: 2014-10-16) footnote footnote The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote footnote The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.	WebView Android – Full support WebView Android 50 (Release date: 2016-04-13) footnote footnote The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.	WebView on iOS – No support WebView on iOS footnote No support
`downlinkMax` Experimental	Chrome – Full support Chrome 61 (Release date: 2017-09-05) footnote footnote Only supported on ChromeOS	Edge – No support Edge footnote No support	Firefox – No support Firefox footnote No support	Opera – No support Opera footnote No support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 45 (Release date: 2018-02-15) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 50 (Release date: 2016-04-13) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`effectiveType`	Chrome – Full support Chrome 61 (Release date: 2017-09-05) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 48 (Release date: 2017-09-27) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 45 (Release date: 2018-02-15) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 50 (Release date: 2016-04-13) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`rtt`	Chrome – Full support Chrome 61 (Release date: 2017-09-05) footnote footnote The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote footnote The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.	Firefox – No support Firefox footnote No support	Opera – Full support Opera 48 (Release date: 2017-09-27) footnote footnote The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote footnote The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 25 (Release date: 2014-10-16) footnote footnote The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote footnote The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.	WebView Android – Full support WebView Android 50 (Release date: 2016-04-13) footnote footnote The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.	WebView on iOS – No support WebView on iOS footnote No support
`saveData`	Chrome – Full support Chrome 65 (Release date: 2018-03-06) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 52 (Release date: 2018-03-22) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 65 (Release date: 2018-03-06) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 47 (Release date: 2018-07-23) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 9 (Release date: 2018-09-15) footnote Full support	WebView Android – Full support WebView Android 65 (Release date: 2018-03-06) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`type` Experimental	Chrome – Full support Chrome 61 (Release date: 2017-09-05) footnote footnote Only supported on ChromeOS	Edge – No support Edge footnote No support	Firefox – No support Firefox 31 – 31 (Release date: 2014-07-22) footnote Removed in 32 and later	Opera – No support Opera footnote No support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android 31 – 98 (Release date: 2014-07-22) footnote Removed in 99 and later	Opera Android – Full support Opera Android 45 (Release date: 2018-02-15) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 50 (Release date: 2016-04-13) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`typechange` event Deprecated Non-standard	Chrome – No support Chrome footnote No support	Edge – No support Edge footnote No support	Firefox – No support Firefox 31 – 31 (Release date: 2014-07-22) footnote Removed in 32 and later	Opera – No support Opera footnote No support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote footnote Removal proposed in bug 40509974.	Firefox for Android – No support Firefox for Android 31 – 98 (Release date: 2014-07-22) footnote Removed in 99 and later	Opera Android – Full support Opera Android 25 (Release date: 2014-10-16) footnote footnote Removal proposed in bug 40509974.	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote footnote Removal proposed in bug 40509974.	WebView Android – Full support WebView Android 50 (Release date: 2016-04-13) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
Available in workers	Chrome – Full support Chrome 61 (Release date: 2017-09-05) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – No support Firefox 31 – 31 (Release date: 2014-07-22) footnote Removed in 32 and later	Opera – Full support Opera 48 (Release date: 2017-09-27) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 38 (Release date: 2014-10-08) footnote Full support	Firefox for Android – No support Firefox for Android 53 – 98 (Release date: 2017-04-19) footnote Removed in 99 and later	Opera Android – Full support Opera Android 45 (Release date: 2018-02-15) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 3 (Release date: 2015-04-10) footnote Full support	WebView Android – Full support WebView Android 50 (Release date: 2016-04-13) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support

Tip: you can click/tap on a cell for more information.

Full support: Full support
No support: No support
: Experimental. Expect behavior to change in the future.
: Non-standard. Check cross-browser support before using.
: Deprecated. Not for use in new websites.
: See implementation notes.

Instance properties

Instance methods

Events

Specifications

Browser compatibility

Legend

See also