Web/API/NetworkInformation/effectiveType

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

The effectiveType read-only property of the NetworkInformation interface 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.

Syntax

var effectiveType = NetworkInformation.effectiveType

Value

A String containing one of 'slow-2g', '2g', '3g', or '4g'.

Specifications

Specification	Status	Comment
Network Information APIThe definition of 'effectiveType' 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
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

Legend

Full support  

Full support

No support  

No support

Experimental. Expect behavior to change in the future.'

Experimental. Expect behavior to change in the future.

See Also

• Effective Connection Type

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