Eugene Yan has published a practical guide on serving HTML with FastAPI, a topic he notes was previously undocumented. The tutorial walks through configuring FastAPI to work with Jinja templates, handling forms, and structuring a basic HTML app. It fills a clear gap for developers who want to build server-rendered interfaces without relying on a separate frontend framework.
The guide is written from the author's direct experience, as he explicitly states he couldn't find any existing resources on this combination. It covers the essential steps: setting up the FastAPI app, integrating Jinja for templating, and processing form submissions. For developers already using FastAPI for APIs, this tutorial offers a straightforward path to adding interactive web pages.
Since this is a single source, there are no conflicting views to compare. The guide is aimed at a technical audience and assumes familiarity with Python and basic web development. While the examples are generic, the techniques are directly applicable to AI/ML projects that need a simple web interface for demos or internal tools.