KaTeX

KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. It is designed for performance, rendering equations significantly faster than other libraries, making it the preferred choice for high-traffic websites where page load speed is critical. While it supports a slightly smaller subset of LaTeX commands than MathJax, it covers the vast majority of use cases for scientific and mathematical content. Its simplicity and speed make it a favorite among developers who want to integrate high-quality math rendering into their web applications with minimal overhead.