LaTeX.js
JavaScript LaTeX to HTML5 translator
This is a LaTeX to HTML5 translator written in JavaScript using PEG.js. latex.js for LaTeX is similar in spirit to marked for Markdown. LaTeX.js tries to be absolutely and uncompromisingly exact and compatible with LaTeX. The generated HTML is exactly what is meant to be output, down to the last space. The CSS makes it look like LaTeX output—except where impossible in principle, see limitations.