Folder Preview provides a Quick Look extension to preview contents in Finder.
Before started, you will have to enable Quick Look extension in System Settings.
Then you can press spacebar or ⌘ + Y to quick look folders in Finder.
You can also right-click the column header to show or hide columns.
## Supported file extensions of archives
- zip
- tar
- gz
- 7z
- rar
- Support more languages.
OK JSON - Viewer & Formatter 