With Swagger UI Viewer, you can simply open an openapi yaml/json file in the github.com or file tab of your browser, and it will automatically render it using the swagger-ui external rendering site. This makes it easy to visualize and interact with your openapi files, providing a user-friendly interface for exploring and understanding your API documentation.

It's worth noting that Swagger UI Viewer also supports private repositories on github.com. By utilizing the login cookie information, it obtains and displays the tokenized URL of the private repository, allowing you to seamlessly view and analyze your openapi files, even if they are stored in a private repository.

Overall, Swagger UI Viewer is a valuable tool for developers and API enthusiasts, offering a convenient way to render and explore openapi yaml/json files in your browser. Whether you're working on public or private repositories, this add-on simplifies the process of visualizing and understanding your API documentation.