LocalCORS is a powerful Chrome extension designed specifically to tackle CORS issues on localhost andThis free tool provides a seamless experience for developers by ensuring that CORS errors do not reappear after a page refresh or browser restart. It employs dynamic rules that are persistent across service-worker eviction and Chrome updates, allowing developers to work without interruptions. The extension is scoped to localhost by default, ensuring that it does not interfere with other sites like YouTube or Gmail, thereby maintaining a secure browsing environment.

With features like a per-tab badge indicating the active status, an options page for managing host toggles, and automatic handling of preflight OPTIONS requests, LocalCORS stands out among other CORS extensions. It allows users to easily enable or disable CORS for specific localhost ports and provides a user-friendly interface that matches Chrome's theme. This ensures developers can focus on their work without worrying about CORS-related disruptions.