StorageAccessHandle: estimate() method

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

See full compatibility

Note: See StorageManager.estimate() to understand usage.

Syntax

estimate()

Parameters

None.

Return value

A Promise that fulfills with an unpartitioned StorageEstimate object.

Exceptions

SecurityError DomException: Thrown if access was not granted.

See StorageManager.estimate()

Examples

document.requestStorageAccess({ estimate: true }).then(
  (handle) => {
    console.log("estimate access granted");
    await handle.estimate();
  },
  () => {
    console.log("estimate access denied");
  },
);

Note: See Using the Storage Access API for a more complete example.

Specifications

Specification
Extending Storage Access API (SAA) to non-cookie storage # dom-storageaccesshandle-estimate

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`estimate`	Chrome – Full support Chrome 125 (Release date: 2024-05-14) footnote Full support	Edge – No support Edge footnote No support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 111 (Release date: 2024-06-12) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 125 (Release date: 2024-05-14) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 83 (Release date: 2024-06-25) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – Full support Samsung Internet 27 (Release date: 2024-11-06) footnote Full support	WebView Android – No support WebView Android footnote No support	WebView on iOS – No support WebView on iOS footnote No support

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Full support: Full support
No support: No support

StorageAccessHandle: estimate() method

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