This documentation is not using the current rendering mechanism and will be deleted by December 31st, 2020. The extension maintainer should switch to the new system. Details on how to use the rendering mechanism can be found here.


The Extension Builder is a tool for TYPO3 extension developers to ease the implementation of extensions. It provides a “kickstart” mode to kickstart a simple frontend plugin with basic CRUD (Creat - Read - Update - Delete) functions (not to be used in production mode) which can be extended and modified to the actual needs

What does it do?

The Extension Builder helps you to build TYPO3 extensions based on extbase and fluid. You can design your model with a graphic modeler and create Plugins or Backend modules. All required files are generated and you will have a basic extension where you can insert your domain logic. In contrary to the former kickstarter the extension builder has an edit mode that enables the continuous use during development. You can modify the autogenerated classes (add new methods, modify the method bodies, add comments and annotations) and the extension builder preserves your changes, even if you then rename models or properties in the modeler.

The ExtensionBuilder is NOT intended to do TYPO3 CMS specific stuff, like extending pages or custom content elements, as the the old kickstarter. It focuses on extensions development in a sense of Domain Driven Design


The Modeler provides a graphical interface to model your Domain

Modeler Blog Example

When you click on the “Save” button a complete code base for a TYPO3 extension is generated. You can install the generated plugins and test the output in the frontend.