Storage access

The document.requestStorageAccess() method allows content in iframes to request storing and reading cookies and other site data, while the document.hasStorageAccess() method checks if such access is granted.

Baseline Status: Achieved Widely Available on Jun 5, 2026 (Cross-browser Newly Available since Dec 5, 2023).

Desktop Browser Engine Support

Google Chrome

119

Supported

Mozilla Firefox

65

Supported

Apple Safari

11.1

Supported

Microsoft Edge

85

Supported

Mobile Browser Engine Support

Chrome Android

120

Firefox Android

65

Safari iOS

11.3

Specifications and References

Specification ↗ Feature XML ↗

MDN Browser Compat Data Keys:

api.Document.hasStorageAccess ↗ api.Document.requestStorageAccess ↗ api.Permissions.permission_storage-access ↗ html.elements.iframe.allow.storage-access ↗ http.headers.Permissions-Policy.storage-access ↗