Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The downloadTotal read-only property of the BackgroundFetchRegistration interface returns the total size in bytes of this download. This is set when the background fetch was registered, or 0 if not set.
A number.
Logging this property to the console returns the total size in bytes of this download.
js
console.log(bgFetch.downloadTotal);
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
downloadTotal |
74 | 79 | No | No | 62 | No | No | 74 | No | 53 | No | 11.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/BackgroundFetchRegistration/downloadTotal