Although QLMarkdown.app can open the .md file, it does not appear in the "Open With" menu.

[setanarut]

Although QLMarkdown.app can open the .md file, It does not appear in the "Open With" menu when you right-click. It always needs to be set as default.

[sbarex]

QLMarkdown was not developed to be a standalone markdown viewer, but only to provide Quick View functionality. The app must be used only to configure the appearance of the Quick Look preview.

[setanarut]

It's true from your point of view, but there's no reason why it shouldn't be standalone. I use Interface because the command line tool doesn't convert properly.

[Kolsha]

I would also use it as standalone