Service Worker Inspector is a free Chrome extension designed for developers working with Progressive Web Apps (PWAs). It offers a straightforward interface to inspect service worker registrations, view cached resources, and simulate offline conditions. Users can easily access a list of all registered service workers along with their status, scope, and script URL. Additionally, the tool allows for the forced update of waiting service workers and the unregistration of those no longer needed.

The extension further enhances the development process by providing a cache viewer that organizes cached resources by name, displaying the number of cached URLs per cache. With features such as offline simulation, auto-refreshing badges, and a local storage policy ensuring privacy, Service Worker Inspector is an invaluable resource for PWA developers, frontend developers, and QA engineers, making it easier to debug and test service worker-related functionalities.