Unblock CORS & Origin is a free Chrome add-on developed by tabhibernation2.0. This add-on allows users to unblock the Cross-Origin Resource Sharing (CORS) feature and test CORS functionality. With easy setup and a user-friendly interface, this add-on is a valuable tool for developers and web application testers.

To get started, simply install the extension and open the toolbar popup. From there, you can activate the add-on by toggling the button on the left side. Once activated, the icon will change from gray to an orange "C" letter, indicating that CORS is now unblocked.

The main features of Unblock CORS & Origin include performing requests to unblock CORS, enabling cross-domain Ajax requests in web applications, and adding the "Access-Control-Allow-Origin" rule to the response header. With these features, developers can easily overcome CORS restrictions and ensure smooth data exchange between different domains.

Unblock CORS & Origin is an essential tool for those working with modern browsers that have CORS blocked by default. It simplifies the process of unblocking CORS and allows for seamless testing of CORS functionality in web applications.