PreviewCode 1.2.2 – Easy source code file previews


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
  • Elixir
  • Erlang
  • Fortran
  • F#
  • Go
  • Haskell
  • Java
  • JavaScript
  • Julia
  • Kotlin
  • Lisp
  • Lua
  • Objective-C
  • Pascal
  • Perl
  • PHP
  • Python
  • Ruby
  • Rust
  • Swift
  • TypeScript
  • Visual Basic Script


Shell Scripting

  • Bash
  • C Shell
  • Korn Shell
  • TCSH
  • Z Shell



  • ARM Assembler
  • x86-64 Assembler



  • CSS
  • LaTex
  • Protobuf
  • SQL script
  • Twig
  • Terraform source and vars files
  • .cmake files
  • .env files
  • Config files
  • Asciidoc


Version 1.2.2:

  • Initial support for non-utf8 source code file encodings.
  • Support XML Apple property list files (.plist).
  • Support the public.lua-script UTI.



  • Intel, 64-bit processor
  • macOS 10.15 or later




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Size – 9.6MB