🏠 New in High Baseline Support: Storage access

June 5, 2026

caniuse · mdn · spec

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.

Source features

• api.Document.hasStorageAccess [mdn]
• api.Document.requestStorageAccess [mdn]
• api.Permissions.permission_storage-access [mdn]
• html.elements.iframe.allow.storage-access [mdn]
• http.headers.Permissions-Policy.storage-access [mdn]