Save-DataBrowsers send the Save-Data HTTP request header when the user turns on a data-saving mode. It is a hint to reduce data sent to the browser. Servers should respond with alternative content, such as smaller images and videos, or different markup and styling.limitedhttps://wicg.github.io/savedata/https://developer.mozilla.org/docs/Web/HTTP/Reference/Headers/Save-Dataapi.NetworkInformation.saveDatahttp.headers.Save-Datahttps://nowyoucanuse.com/features--savedata.html