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NetworkInformation

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The NetworkInformation interface of the Network Information API 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 interface cannot be instantiated. It is instead accessed through the connection property of the Navigator interface.

Note: This feature is available in Web Workers

EventTarget NetworkInformation

Properties

This interface also inherits properties of its parent, EventTarget.

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

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 Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
NetworkInformation
61
79
31
No
48
No
See bug 185697.
50
38
31-99
25
No
See bug 185697.
3.0
change_event
61
79
No
No
48
No
50
38
No
On Firefox, the event handler property corresponding to the change event is ontypechange.
45
No
3.0
downlink
61
The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.
79
The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.
No
No
48
The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.
No
50
The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.
38
The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.
No
25
The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.
No
3.0
The value is never greater than 10 Mbps, as a non-standard anti-fingerprinting measure.
downlinkMax
61
Only supported in Chrome OS
No
No
No
No
No
50
38
No
45
No
3.0
effectiveType
61
79
No
No
48
No
50
38
No
45
No
3.0
rtt
61
The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.
79
The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.
No
No
48
The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.
No
50
The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.
38
The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.
No
25
The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.
No
3.0
The value is never greater than 3000 ms, as a non-standard anti-fingerprinting measure.
saveData
65
79
No
No
52
No
65
65
No
47
No
9.0
type
61
Only supported in Chrome OS
No
31
No
No
No
50
38
31-99
45
No
3.0
typechange_event
No
No
31
No
No
No
No
38
Removal proposed in bug 699892.
31-99
25
Removal proposed in bug 699892.
No
3.0
Removal proposed in bug 699892.
worker_support
61
79
31
No
48
No
50
38
53-99
45
No
3.0

See also

© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation

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Last Updated 2022-04-27T09:33:08Z