Shortcuts has built-in actions to convert Markdown to Rich Text and back, but have you ever needed to get the HTML generated, or want more advanced syntax of MultiMarkdown in a shortcut?
Drafts includes a few utility Shortcuts actions, including “Markdown to HTML”, which takes text input, and runs it through Drafts’ built-in Markdown parsers to create HTML. This action runs in the background, no need open Drafts.