ProseMirror is a toolkit for building rich text editors. It's not an off-the-shelf editor, but rather a framework that gives you the building blocks to create highly customized and powerful editing experiences.

The core of ProseMirror is its schema, which defines the document structure and the types of content it can contain. This schema-driven approach allows for a high degree of flexibility and extensibility, enabling developers to create editors that precisely match their application's needs. Whether you need simple formatting or complex nested structures, ProseMirror can handle it.

Beyond its flexible schema, ProseMirror provides a robust set of modules for handling common editor features like collaboration, history management, and plugin integration. This comprehensive suite of tools empowers developers to build editors that are not only functional but also performant and scalable for even the most demanding applications.