You can find many online solutions or HTML to JPEG utilities available on internet, so it certain that htm to jpg conversion is possible. How these utilities work is that they render the ouput of the HTML file (usually web page) and simply save that in JPEG format as picture.Open HTM file Open JPG file
Professional desktop document publishing software from Adobe
Mac version od Adobe's popular document designing and publishing software
A cross-platform command-line utility to capture WebKit's rendering of a web page into a variety of vector and bitmap formats
A HTML to image converter
An online text to image conversion service
A simple HTML to other format converter
A HTML to SVG, PDF or PNG convertor.