wtf is swagger2markup?

Swagger2Markup takes the machine-readable description of your API (a Swagger file, in JSON or YAML format) and turns it into human-readable documentation. The real benefit is that it lets you combine that auto-generated output with your own hand-written explanations, so you end up with a complete, easy-to-read user guide for your API. At a high level, it reads a Swagger file, either stored locally or fetched over the web, and converts it into either AsciiDoc or GitHub Flavored Markdown. These are plain-text formatting languages used to write documentation that can later be turned into polished formats like HTML, PDF, or EPUB. The tool relies on the official Swagger parser to read the source file and then uses a separate library to build the formatted output documents. This project is aimed at teams building REST APIs who want clean, shareable documentation without manually keeping it in sync with their code. For example, a startup offering a public API could use this to generate a polished PDF guide or a hosted HTML reference page, mixing the automated endpoint details with custom tutorials and introductions. It works whether you design your API contract first (writing the Swagger file by hand) or generate it from your code using popular Java frameworks like Springfox. A notable tradeoff is the choice of AsciiDoc as the preferred output format over the more familiar Markdown. AsciiDoc supports richer formatting and is better suited for large, structured documents like public API guides, but it requires a slightly different toolset to convert into final formats. The project also requires Java and integrates well with standard Java build tools like Gradle and Maven, which makes it a natural fit for Java-based development teams.