Install the app and run it. This will register the availability of the app’s QuickLook extensions, Previewer and Thumbnailer. You can now quit the app: just click OK:
Using QuickLook in Finder — select a Markdown file (
.markdown, for example) and press space — will pop up a rendered image of file:
You can disable or re-enable Previewer and Thumbnailer in System Preferences > Extensions:
For some background information on how Catalina delivers QuickLook previews, please see this blog post.
From version 1.1.1, you can use the in-app UI to submit feedback. Just click in the Send Feedback button in the main window, or select Report a Bug… from the Help menu:
If it appears that either Previewer or Thumbnailer are not working after you have run the host app, please log out of your Mac and then log back in. A future release will offer to do this for you.
If you have found PreviewMarkdown to be useful, please consider writing a positive review on the Mac App Store, or simply give it a rating.
In addition to its own code, PreviewMarkdown makes use of code from the following sources:
string index out of rangein SwiftyMarkdown).
You can view PreviewMarkdown’s source code at GitHub.