Violentmonkey
Violentmonkey is a free, open-source browser extension for managing and running user scripts, primarily used to customize and enhance web pages by injecting JavaScript code. It supports various browsers like Chrome, Firefox, and Edge, allowing users to automate tasks, modify page content, or add new features. The tool provides a user-friendly interface for installing, updating, and managing scripts from repositories like Greasy Fork.
Developers should learn Violentmonkey when they need to automate repetitive web tasks, test custom JavaScript modifications, or create browser-based prototypes without building full extensions. It's particularly useful for web scraping, UI enhancements, and debugging, as it enables quick script injection and management across multiple sites. Use cases include ad-blocking, data extraction, and accessibility improvements on dynamic web pages.