CORS Policy Generator
Generate CORS configuration headers
CORS Policy Generator
Configure Cross-Origin Resource Sharing and generate header values plus example Express/Nginx configs.
Access-Control-Allow-Origin: https://example.com Access-Control-Allow-Methods: GET, POST Access-Control-Allow-Headers: Content-Type, Authorization Access-Control-Max-Age: 86400
const express = require('express');
const cors = require('cors');
const app = express();
app.use(cors({
origin: 'https://example.com',
methods: ['GET', 'POST'],
allowedHeaders: ['Content-Type', 'Authorization'],
credentials: false,
maxAge: 86400
});# Nginx CORS configuration
location / {
add_header 'Access-Control-Allow-Origin' 'https://example.com' always;
add_header 'Access-Control-Allow-Methods' 'GET, POST' always;
add_header 'Access-Control-Allow-Headers' 'Content-Type, Authorization' always;
add_header 'Access-Control-Max-Age' '86400' always;
if ($request_method = 'OPTIONS') {
return 204;
}
}CORS Policy Generator is a free web tool. Generate CORS configuration headers No downloads, works on any device, your data never leaves your browser.
Key Features
100% free with no usage limits
No registration or sign-up required
Keyboard accessible
Free for personal and commercial use
Works offline once loaded
Supports multiple input formats
How to Use CORS Policy Generator
Enter your input
Type or paste the values you want to process
Adjust settings if needed
Customize any options for your specific use case
Get instant results
The tool processes your input automatically and shows results immediately
Copy your results
Use the copy button to save the output for later use
Use Cases
Everyday use
Professional work
Quick reference
Educational purposes
Frequently Asked Questions
Do I need to sign up?
No account required. Just open the page and start using the tool immediately.
Is my data safe?
Absolutely. All processing happens locally in your browser. Nothing is uploaded or stored.
Can I use it offline?
Once the page loads, the tool works without an internet connection.
Does it work on mobile?
Yes, the tool is fully responsive and works perfectly on phones and tablets.
Tool Information
Related Tools You Might Like
Email Domain Checker
Check email domain with this free online tool
IP Address Validator
IP Address Validator — free online security tool
Password Strength Meter
Measure password strength with this free online tool
Ssn Validator
Ssn Validator — free online security tool
URL Validator
URL Validator — free online security tool
Checksum Generator
Generate checksum with this free online tool
Surfboard Volume Calculator
Calculate the perfect surfboard volume based on your weight, experience level, and wave conditions.
Wave Height Converter
Convert between different wave height measurements (face height, Hawaiian scale, ocean swell).
Scuba Dive Planner
Plan your scuba dive with depth limits, bottom time, and safety decompression requirements.