I sometimes drop down into my Obsidian vault to do some manual file management, and it’s really handy to be able to use Quicklook to preview a file.
QuickLook doesn’t natively support Markdown, but there’s an extension you can install from the Mac App Store that enables support for several file types, including Markdown.
After clicking the link, the Mac App Store tells me “This app is currently not available in your country or region.” Can you share the name of the app you are suggesting?
It seems like glance-quick-look-plugin, it also has the github link: https://github.com/samuelmeuli/glance
Sorry for the bad link. Glance is indeed the correct app. Looks like it may have been abandoned.