QuickJSON

QuickJSON is a macOS Quick Look plugin that formats JSON files for easy reading directly from the Finder preview pane. When a JSON document is selected, the plugin renders it in a compact, comma‑first style, presenting keys, values, and nested structures with clear indentation and spacing. The tool also enables text selection within the preview, allowing users to copy portions of the formatted JSON without opening an external editor.

The plugin is intended for developers, system administrators, or any users who frequently inspect JSON data on macOS and want a quick visual representation without launching a dedicated viewer. It integrates with the native Quick Look framework, so the functionality is available system‑wide or per‑user, depending on where the generator is installed.

Installation can be performed manually by placing the provided qlgenerator file in the appropriate QuickLook directory, or via Homebrew Cask for automated setup and removal. The plugin supports macOS 10.6 and later, and is marked as stable.