CORS Anywhere

CORS Anywhere: Node.js Reverse Proxy

CORS Anywhere is a Node.js reverse proxy that adds CORS headers to requests, allowing you to access APIs from the client-side that don't support CORS. Useful for prototyping or using APIs in web demos that don't have CORS enabled.

What is CORS Anywhere?

CORS Anywhere is a Node.js reverse proxy service that adds CORS headers to requests. This allows you to access APIs from client-side code (like JavaScript in the browser) that otherwise prohibit cross-origin requests.

Many APIs do not enable CORS (Cross-Origin Resource Sharing) by default. This means XMLHttpRequest and Fetch requests made from browser code will be blocked for security reasons, since the browser doesn't know if the other origin is trusted. CORS Anywhere acts as a proxy that sits between the client and API, adding the required CORS headers to enable cross-origin access.

CORS Anywhere can be useful for prototyping or creating demos and examples that need to access APIs which don't support CORS. However, it should not be used for production applications since all data flows through a third-party service. For production use, the preferred solution is to have the API provider enable CORS on their server directly.

Some key points about CORS Anywhere:

• Open source Node.js proxy created by Rob Wu
• Allows cross-origin requests to APIs from browser code and other clients
• Useful for prototypes, demos, and learning that require accessing APIs lacking CORS
• Not intended or suitable for production due to risks of passing data through a third-party

CORS Anywhere Features

Official Links