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

The Navigator.connection read-only property represents a NetworkInformation containing information about the system's connection, such as the current bandwidth of the user's device or whether the connection is metered. This could be used to select high definition content or low definition content based on the user's connection.


connectionInfo = navigator.connection


Specification Status Comment
Network Information API
The definition of 'Navigator.connection' in that specification.
Editor's Draft Initial specification

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 61 ? No support ? No support
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support 50 38 12.0[1] 1.4 No support 37 No support

[1] The Network API can be disabled using the dom.netinfo.enabled preference.

See also

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Last updated by: jpmedley,