CORS Anywhere with Hono and Cloudflare Workers

A CORS Anywhere proxy using the Hono framework, deployed on Cloudflare Workers.

Features

• Proxy requests to bypass CORS restrictions
• Handles URLs passed directly in the path (with query string support)
• Supports both HTTP and HTTPS
• SSRF protection — blocks private/internal IP ranges and cloud metadata endpoints
• Proper URL parsing via URL constructor
• Shows usage instructions when accessed without a URL

Installation

1. Clone the repository:

   git clone https://github.com/7a6163/cors-proxy
   cd cors-proxy

2. Install dependencies:

   npm install

3. Development:

   npm run dev

4. Deploy to Cloudflare Workers:

   npm run deploy

Usage

Once deployed, pass the target URL directly in the path.

Examples

• https://your-worker.workers.dev/http://example.com/ — Proxies with CORS headers
• https://your-worker.workers.dev/example.com — Defaults to HTTPS
• https://your-worker.workers.dev/example.com:8080/path — Custom port
• https://your-worker.workers.dev/example.com/api?key=123 — Query strings preserved
• https://your-worker.workers.dev/ — Shows usage text

License

This project is licensed under the MIT License.