caddyserver/nginx-adapter

The nginx-adapter lets you take an existing NGINX configuration file and feed it directly into Caddy, a web server, so you don't have to manually rewrite all your settings. It translates the instructions meant for NGINX into the format Caddy naturally understands, saving you the hassle of learning a new configuration syntax just to switch server software. At a high level, it works as a translator. When you start the server, you point it at your NGINX config file and tell it to use this adapter. The adapter reads through your file, recognizes the common NGINX instructions, and converts them on the fly. It currently understands a good chunk of the most common directives, like setting up server names, handling file locations, routing traffic to other services, and applying basic redirects or access rules. This is mainly for teams or individuals who already rely on NGINX but want to try out or migrate to Caddy without starting from scratch. For example, if you manage a web application with dozens of routing rules and proxy settings, rewriting all of that by hand into a new format would be tedious and error-prone. This tool lets you bring your existing setup along for the ride, making the transition much smoother. The important thing to know is that this project is not finished. The creators are upfront about this and are asking for community help to complete it. Right now, if your configuration uses a feature the adapter doesn't fully support yet, the software might just quietly skip it or issue a warning instead of stopping with an error. That means it is a helpful starting point for migrating, but you will want to carefully test your setup to make sure everything behaves as expected.