Violentmonkey is a userscript manager extension and JavaScript injection framework. It allows users to install and manage custom scripts and CSS to modify the behavior and appearance of websites based on metadata-driven trigger conditions.
The project functions as a cloud-synced script manager, backing up and synchronizing scripts across different devices using external cloud storage services. It also serves as a cross-origin request bridge, providing a communication layer that enables scripts to bypass the same-origin policy to fetch data.
The tool covers a broad range of browser automation and customization capabilities. These include the ability to inject custom DOM elements and styles, manage browser tabs, and interact with the system clipboard and desktop notifications. It also provides a persistent scoped storage model for maintaining script-specific data across tabs and supports integration with external code editors for script development.
