Syntax Highlight is a free WordPress plugin designed to improve the experience of editing plugins and themes by incorporating syntax highlighting. This feature allows developers to easily read and write code, making it more efficient to manage their projects. The plugin supports AJAX saving via the CTRL+S shortcut, ensuring that unsaved changes are not lost, and prompts users when attempting to leave with unsaved modifications. Additionally, users can adjust font size and utilize fullscreen mode for a more immersive coding environment.

The plugin is highly configurable through its dedicated settings page and supports various keyboard shortcuts, including Vim and Emacs. It also includes a robust search and replace function using regular expressions, enhancing the editing capabilities further. With internationalization support and a variety of themes available, Syntax Highlight provides a comprehensive solution for developers looking to streamline their WordPress coding tasks.