Awesome
jupyter-notebook-quick-look
Preview jupyter notebooks in quick look.
Installation
Build qlgenerator using Xcode and then move jupyter-notebook-quick-look.qlgenerator to /Library/QuickLook (Note: Make sure to move it to this system-wide folder NOT the user folder ~/Library/Quicklook ! ).
Dependencies
Python 3 with jupyter installed.
Check out also the Jupyter App for opening jupyter notebooks right from the Finder!