Crash reporting sends a report to a URL nominated by the Reporting-Endpoints header when a user is unable to continue using the page because the browser or tab crashed.

The window.crashReport object is a key-value store to record information about your application's state. If there's a crash, then the data in the key-value store is sent to your crash reporting endpoint, to help you pinpoint the cause of the crash.

Permissions policy violation reporting sends a report to a URL nominated by the Reporting-Endpoints header or the ReportingObserver API when a page violates a policy. You can also use the Permissions-Policy-Report-Only header to receive reports of what might break under a given policy.

COEP violation reporting sends a report to a URL nominated by the Reporting-Endpoints header or the ReportingObserver API when a page violates its Cross-Origin-Embedder-Policy policy.

Deprecation reporting sends a report to a URL nominated by the Reporting-Endpoints header or the ReportingObserver API when a page uses a deprecated API or other browser feature.

Intervention reporting sends a report to a URL nominated by the Reporting-Endpoints header when the browser has not honored an application's request, contrary to specified behavior, such as for security or privacy reasons.

Subresource integrity violation reporting sends a report to a URL nominated by the Reporting-Endpoints header or the ReportingObserver API when a resource request violates an integrity check.