Nginx Config Generator
Generate production-ready Nginx configurations for common use cases.
Configuration
Additional Options
Generated Config
server {
listen 80;
server_name example.com;
location / {
proxy_pass http://localhost:3000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_cache_bypass $http_upgrade;
}
}What is an Nginx Config Generator?
Nginx is the world's most popular web server and reverse proxy, powering over 30% of the internet's busiest websites. Its configuration file syntax, while powerful, has nuances that can lead to subtle errors—a misplaced semicolon, incorrect proxy_pass directive, or missing SSL parameter can cause downtime or security vulnerabilities. An Nginx config generator helps you create correct, production-ready configurations without memorizing every directive.
This tool is used by DevOps engineers, SREs, and backend developers who need to quickly generate Nginx configurations for reverse proxying to application servers, enabling SSL/TLS termination, setting up load balancing, configuring caching headers, and routing traffic in microservice architectures. Common scenarios include proxying to Node.js or Python backends, serving static assets with proper cache headers, configuring WebSocket upgrades, and setting up redirect rules for domain migrations.
Frequently Asked Questions
How to configure Nginx as a reverse proxy?
Use the proxy_pass directive inside a location block to forward requests to your backend server. A basic configuration includes: location / { proxy_pass http://localhost:3000; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; }. The proxy_set_header directives ensure your backend receives the original client information rather than Nginx's details.
How to enable SSL in Nginx?
Add ssl_certificate and ssl_certificate_key directives pointing to your certificate files, and listen on port 443 with the ssl parameter: listen 443 ssl. Use ssl_protocols TLSv1.2 TLSv1.3 to disable older insecure protocols. For free certificates, use Let's Encrypt with certbot which automatically configures Nginx SSL settings and handles renewal.
What is the difference between location / and location ~ ?
location / is a prefix match that matches any URI starting with /. location ~ uses a case-sensitive regex pattern, while ~* is case-insensitive regex. Nginx evaluates locations in a specific order: exact matches (=) first, then longest prefix match with ^~ modifier, then regex matches in file order, and finally the longest prefix match without ^~. Understanding this precedence is key to correct routing.