The website is about the installation and documentation of KaTeX, which is a fast math typesetting library. It explains that KaTeX can render math expressions defined using macros quickly and efficiently. The library has minimal dependencies and works seamlessly on major browsers without needing to reflow the page. Additionally, it produces high-quality print output based on Donald Knuth's gold standard for math typesetting. KaTeX can be easily bundled with a website's resources or used for server-side rendering to ensure consistent results across different environments. The website also mentions that it was created by Emily Eisenberg and Sophie Alpert, with contributions from many others.
