Mathematical LaTeX helper is a tool for rendering mathematical LaTeX-expressions. The tool provides the user with a very simplistic gui that renders tex-expressions directly while typing and is able to copy the rendered images to the clipboard or alternatively save them to the desktop while maintaining transparency information. It is able to extract the original latex-expression out of the rendered images or pdfs by dropping them to the editor in the user interface. It is licensed under the terms of GPL3 and can be used for annotating pdf-documents in lectures, including formulas in powerpoint or openoffice-presentations and other similar use cases.