Why the audit is important
Application Cache, also known as AppCache, is deprecated.
How to pass the audit
Consider using the service worker Cache API instead.
To help migrate from AppCache to service workers, consider the sw-appcache-behavior library. This library generates a service-worker-based implementation of the behavior defined in an AppCache manifest.
See the URL Responds With a 200 When Offline audit reference for more resources on using service workers to make your site work offline.
How the audit is implemented
This section explains how this audit is implemented, so that you can understand how the audit's score is calculated.
The audit passes if no AppCache manifest is detected.