CORS Header Generator
Generate proper CORS headers for your API or web server. Configure CORS settings easily with automatic header generation tool.
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What is CORS Header Generator?
A CORS header generator helps configure Cross-Origin Resource Sharing headers for your server. Define allowed origins, methods, and headers to secure API access.
Key Benefits
- Access control
- Security configuration
- Easy setup
- Standard compliant
Common Use Cases
- •API development
- •Server configuration
- •Security hardening
- •Troubleshooting
How to Generate CORS Headers
- Select origins: Specify allowed domains.
- Allow methods: Choose GET, POST, etc.
- Set headers: Add allowed headers.
- Copy config: Copy server configuration.
Key Features
- Generate Access-Control headers
- Configure allowed origins, methods, headers
- Preflight response settings
- Copy headers for server configuration
- Common presets for popular frameworks
- CORS policy explanation
Frequently Asked Questions
What is CORS?
Cross-Origin Resource Sharing allows servers to specify which origins can access resources, enabling secure cross-domain requests.
What headers do I need?
Key headers: Access-Control-Allow-Origin, Access-Control-Allow-Methods, Access-Control-Allow-Headers.
What does the wildcard (*) mean?
Wildcard allows any origin but cannot be used with credentials. Use specific origins for authenticated requests.
Why do I get preflight errors?
Preflight OPTIONS requests must return proper CORS headers. Ensure your server handles OPTIONS method.