The Shortcuts extender plugin enhances Obsidian's functionality by allowing users to customize keyboard shortcuts for various formatting tasks. It offers the ability to change heading levels with simple keyboard shortcuts, clear markup from selected text, and toggle code blocks. The plugin is especially useful for those writing in non-English languages, providing shortcuts for special characters like brackets and code fences. Additionally, users can modify list levels and work with Python code fences easily. The plugin also supports customizations for both Windows and Mac users, with specific adjustments for macOS keyboard shortcuts. This plugin boosts productivity by simplifying text formatting and special character input within Obsidian.