E2M is a Python library capable of parsing and converting multiple file types into Markdown format. It employs a parser-converter architecture, supporting the conversion of a variety of file formats including doc, docx, epub, html, htm, url, pdf, ppt, pptx, mp3, and m4a. The ultimate aim of the E2M project is to provide high-quality data for Retrieval-Augmented Generation (RAG) and model training or fine-tuning.