What is v3.modernizr.com?

This repository holds the source code for the Modernizr website, which serves as the online home for a popular tool that helps websites look and work consistently across different web browsers. The site is where people learn about the project and generate a custom version of the tool for their own use. In practice, it functions as a builder that lets you pick and choose exactly which browser compatibility checks you need, so you don't have to download a bloated one-size-fits-all file. Under the hood, the website is built with Jekyll, a tool that takes text files and templates and turns them into a finished website. You can think of it as a simple way to manage pages and content without needing a complex backend database. The repository itself is fairly bare in terms of documentation, so you won't find much guidance here on how the code is organized or how to set things up beyond making sure Jekyll is installed. For the actual release process, the project points to a separate wiki page that covers how updates are shipped. The people who would use this are primarily web developers and designers who want to make sure their sites behave consistently regardless of whether someone visits using Chrome, Safari, an old version of Edge, or a mobile browser. For example, if you are building a site that uses a cutting-edge visual effect, you might use Modernizr to check whether a visitor's browser supports it, and if not, provide a simpler fallback so nothing breaks. There is not much to say about notable architectural tradeoffs, since the README doesn't go into detail. The project is straightforward in its stated purpose: it is the website and builder interface, nothing more. Most of the interesting workflow details live outside the repository in a linked wiki, which suggests the maintainers kept the codebase itself minimal while documenting operational steps elsewhere.