Code Colors

Code Colors - Quicklook Preview plug-in is a 100% Swift, lightning-fast Quicklook Extension Plug-in for macOS. It's a work in progress using native syntax highlighting , no JavaScript, no WebKit , no RTF, no external dependencies.

Features

Supported File Types: .swift, .py, .yaml, .xml, .json, as well as files without extensions. --> please tell me what you need.
Syntax Highlighting: Already handles various expressions and symbols --> please tell me what else you need.
Lazy Loading: Load line per line for immediate viewing, stops when view disapears.
Pure Swift: only the code that is necessary: the minimum.
Main-Thread Offloading: All file loading and processing are done off the main thread, ensuring your system remains responsive.
As safe as your file: The app is sandboxed, hardened, notarized, doesn't require internet or any permission whatsoever, doesn't run the files, but iterates through them as utf8 text.
No File Associations: the plug-in doesn't replace the default app for opening files, and text is selectable accross lines for copy/pasting

Download from release or from the repository

Unzip, move somewhere such as /Applications, run once, quit the app: macOS should acknowledge the Quicklook Extension . Uninstall: as the extension stays within the app, remove the app to remove the extension.

I made the app because I was straining my eyes quicklooking python scripts, and I don't like to wait for Xcode to load.