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Workers & Background Tools

Browser-native inspectors and interactive testing tools for Workers & Background. 100% client-side execution — zero external libraries.

8 Tools Available

Run background JavaScript tasks on separate worker threads without blocking the main UI thread.

Share background worker threads across multiple browser tabs and windows.

Background event-driven worker for offline caching and push notifications.

Send messages across same-origin browser tabs and windows.

Create direct two-way channel communication ports between workers/iframes.

Coordinate resource locks across multiple tabs and workers.

Defer server actions until user has a stable network connection.

Queue non-essential tasks during browser idle time using requestIdleCallback.