coderef

Non-cookie storage accessLimited availability

Non-cookie storage access extends the requestStorageAccess() API to let content in cross-site iframes request access to first-party data beyond cookies.

Not yet supported in all major browsers — check the table and provide a fallback.

How to use ↓Compare browsers

Browser support

DesktopChrome
1–124Not supported
125+Supportedsince May 14, 2024
Current: 155
Edge
✕Not supportedup to 154
Current: 154
Firefox
✕Not supportedup to 157
Current: 157
Safari
✕Not supportedup to 27
Current: 27
MobileChrome Android
✕Not supportedup to 155
Current: 155
Firefox Android
✕Not supportedup to 157
Current: 157
Safari iOS
✕Not supportedup to 27
Current: 27

How to use

Not supported in Edge, Firefox, Safari, Chrome Android, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.

Example

Full syntax and examples are on MDN: hasUnpartitionedCookieAccess.

Feature detection

JS · check before using
if ("Document" in globalThis && "requestStorageAccess" in Document.prototype) {
  // Document.requestStorageAccess is available
}

Documentation (MDN)

Specification

Sub-features

Support for each part of the feature (28). The overall table above shows when the whole feature works.

Sub-featureChromeEdgeFirefoxSafariChrome AndroidFirefox AndroidSafari iOS
Document.hasUnpartitionedCookieAccess125125✕✕125✕✕
Document.requestStorageAccess.types_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_BroadcastChannel_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_SharedWorker_parameter125✕✕✕✕✕✕
Document.requestStorageAccess.types_parameter.types_all_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_caches_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_cookies_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_createObjectURL_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_estimate_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_getDirectory_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_indexedDB_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_localStorage_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_locks_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_revokeObjectURL_parameter125✕✕✕125✕✕
Document.requestStorageAccess.types_parameter.types_sessionStorage_parameter125✕✕✕125✕✕
SharedWorker.SharedWorker.options_sameSiteCookies_parameter125✕✕✕148✕✕
StorageAccessHandle125✕✕✕125✕✕
StorageAccessHandle.BroadcastChannel125✕✕✕125✕✕
StorageAccessHandle.SharedWorker125✕✕✕✕✕✕
StorageAccessHandle.caches125✕✕✕125✕✕
Show 8 more
Sub-featureChromeEdgeFirefoxSafariChrome AndroidFirefox AndroidSafari iOS
StorageAccessHandle.createObjectURL125✕✕✕125✕✕
StorageAccessHandle.estimate125✕✕✕125✕✕
StorageAccessHandle.getDirectory125✕✕✕125✕✕
StorageAccessHandle.indexedDB125✕✕✕125✕✕
StorageAccessHandle.localStorage125✕✕✕125✕✕
StorageAccessHandle.locks125✕✕✕125✕✕
StorageAccessHandle.revokeObjectURL125✕✕✕125✕✕
StorageAccessHandle.sessionStorage125✕✕✕125✕✕