CORS Configuration Checker

Analyze and validate Cross-Origin Resource Sharing (CORS) configurations

Note: Due to browser security restrictions, CORS checking works best with APIs that allow cross-origin requests.

Request Configuration

CORS Configuration Generator

Configure your CORS settings and generate server configuration code.

https://example.com
Express.js
const cors = require('cors');

const corsOptions = {
  origin: ["https://example.com"],
  methods: 'GET, POST, PUT, DELETE',
  allowedHeaders: 'Content-Type, Authorization',
  credentials: false,
  maxAge: 86400
};

app.use(cors(corsOptions));

Check CORS Configuration

Enter a URL above to check its Cross-Origin Resource Sharing (CORS) configuration and identify potential security issues.

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