PreferenceManager: reducedData property

Limited availabilitySecure context

The reducedData read-only property of the PreferenceManager interface returns a PreferenceObject used to override the user’s preference for the reduced data of the site.

Valid reducedData value settings are reduce and no-preference.

Value

A PreferenceObject used to override the user’s preference for the reduced data of the site.

Examples

Basic usage

This example demonstrates how to query the user’s reduced data preference.

if (navigator.preferences.reducedData.value === "reduce") {
  // The user prefers you use less data.
} else {
  // The user has stated no preference regarding data use.
}

Specifications

Browser compatibility