Axessibility is an experimental LaTeX package whose goal is to help authors generate accessible PDF documents from their LaTeX files. It has been designed as an ongoing research project by the Math department at University of Torino, Italy. It builds on top of the [accsupp] and tagpdf packages.
Warning: generating accessible PDF documents out of LaTeX files is a complex task. Such complexity depends on various factors: therefore, you can get results with varying quality degree.