Easy source code QuickLook previews and icon thumbnails.

PreviewCode provides QuickLook file previews and Finder file icon thumbnails for source code documents and data files for a wide variety of programming languages.

The app provides two app extensions: Code Previewer and Code Thumbnailer, which can be viewed and managed in macOS’ System Preferences > Extensions. The app itself is a container for these extensions.

You must run the app first to gain these benefits.

PreviewCode supports the following languages features:

• ActionScript
• Ada
• AppleScript
• Arduino
• Basic
• Brainfuck
• C
• C++
• C#
• Clojure
• CoffeeScript
• Dart
• Dylan
• Elixir
• Erlang
• Fortran
• F#
• Go
• Haskell
• Java
• JavaScript
• Julia
• Kotlin
• Lisp
• Lua
• Objective-C
• Pascal
• Perl
• Python
• Ruby
• Rust
• Swift
• TypeScript
• Visual Basic Script

Shell Scripting

• Bash
• C Shell
• Korn Shell
• Z Shell


• ARM Assembler
• x86-64 Assembler


• LaTex
• Protobuf
• SQL script
• Twig

What’s New

Version 1.1.0

• Improved monospace font and style selection.
• Faster theme preview presentation.
• Accelerate the loading of the Preferences panel loading, especially on Intel Macs.
• Other UI improvements.
• Fixed a rare bug in the previewer error reporting code.
• Correct links to other PreviewApps.

App Privacy

The developer, Black Pyramid Software, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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