Testing Progressive Web Apps

Offline capability is a core pillar of Progressive Web Apps. This simulator helps you verify that your application provides a graceful fallback when a user loses their data connection.

How to Test Offline Behavior:

• Load your URL: Ensure your site has a registered Service Worker.
• Allow Caching: Navigate through your site while "Online" to let the Service Worker cache the assets.
• Go Offline: Click the "Toggle Offline Mode" button. This tool will simulate a network break.
• Verify: Attempt to refresh or navigate within the frame. If the site disappears or shows a generic browser error, your offline caching is not configured correctly.

Common Caching Strategies

Cache-First: Checks the cache for assets before attempting the network. Best for static assets like CSS and Icons.
Network-First: Attempts to get the latest data from the server, falling back to cache if the network is unavailable. Best for dynamic content.