The CookieStore type of the cookies API represents a cookie store in the browser.

Windows in different browsing modes may use different cookie stores — a private browsing/incognito mode window, for instance, will use a separate cookie store from a non-incognito/private window.


Values of this type are objects, which can contain the following properties:

A string representing the unique identifier for the cookie store.
An array of integers, which identifies all of the browser tabs that share this cookie store.

Browser compatibility

ChromeEdgeFirefoxFirefox for AndroidOpera
Basic Support (Yes) (Yes)4548 (Yes)


In the following snippet, the cookies.getAllCookieStores() method is used to retrieve all the cookie stores currently available in the browser, and print out each cookie store ID, and the tabs that currently share each cookie store.

function logStores(cookieStores) {
  for(store of cookieStores) {
    console.log(`Cookie store: ${}\n Tab IDs: ${store.tabIds}`);

var getting = browser.cookies.getAllCookieStores();


This API is based on Chromium's chrome.cookies API. This documentation is derived from cookies.json in the Chromium code.

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.

Document Tags and Contributors

 Contributors to this page: wbamberg, Makyen, chrisdavidmills
 Last updated by: wbamberg,