NetworkInformation.downlink

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

The downlink read-only property of the NetworkInformation interface returns the effective bandwidth estimate in megabits per second, rounded to the nearest multiple of 25 kilobits per seconds. This value is based on recently observed application layer throughput across recently active connections, excluding connections made to a private address space. In the absence of recent bandwidth measurement data, the attribute value is determined by the properties of the underlying connection technology.

Syntax

var downLink = NetworkInformation.downlink

Value

A double.

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Experimental
Chrome Full support 61Edge No support NoFirefox No support NoIE ? Opera Full support 48Safari ? WebView Android Full support 50Chrome Android Full support 38Edge Mobile ? Firefox Android ? Opera Android Full support 37Safari iOS ? Samsung Internet Android ?

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.

Document Tags and Contributors

Contributors to this page: fscholz, jpmedley
Last updated by: fscholz,