This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

Secure context
This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

This page is not complete.

Important: Application Cache is deprecated as of Firefox 44, and is no longer available in insecure contexts from Firefox 60 onwards (bug 1354175, currently Nightly/Beta only). Don't use it to offline websites — consider using service workers instead.

Returns a reference to the application cache object for the window.


cache = window.applicationCache


  • cache is an object reference to an OfflineResourceList.


Browser compatibility

No compatibility data found. Please contribute data for "api.Window.applicationCache" (depth: 1) to the MDN compatibility data repository.

See also