NEL Reports

Network Error Logging (NEL) is a mechanism developed by the World Wide Web Consortium (W3C) to help web developers and administrators monitor and diagnose network-related issues that users may encounter while accessing their websites.

NEL allows websites to declare a reporting policy that defines how browsers should report network errors that occur while interacting with the site. When a user experiences a network error, the browser sends a report to a specified endpoint, providing information about the error. The reports are generated asynchronously to minimize the impact on the user experience. 

NEL Reports is an easy way to start capturing and visualizing these reports.