A code generator is a software tool that automatically creates code based on specific input or templates. It helps developers save time and reduce errors by generating repetitive code structures, such as HTML, CSS, or JavaScript for web development. Code generators can be particularly useful for creating boilerplate code or scaffolding for new projects. These tools often allow customization through user-defined parameters, enabling developers to tailor the generated code to their needs. Popular examples of code generators include Yeoman for web applications and Swagger for API documentation. By automating code creation, these tools enhance productivity and streamline the development process.