Developing & Using Extensions

Extension Development

Getting started with extension development

  • Introduction to extensions in TYPO3

  • Extension t3coreapi:extension-files-locations

  • t3coreapi:extension-naming and t3coreapi:cgl

TYPO3 Explained - API Quicklinks

  • QueryBuilder based on Doctrine

  • t3coreapi:DependencyInjection

  • t3coreapi:request-handling

Extension Manuals

System Extensions

Here you can find documentation of system extensions and third-party extensions, if available.

System extensions are shipped with the TYPO3 core. A list of all available system extension documentation is found in the system extensions section.

Third-party extensions

Third-party extensions are available through the TYPO3 Extension Repository (TER) or via composer.

Go to the TYPO3 Extension Repository (TER) to search for documentation of third-party extensions.

The legacy Extension manual search is still available.

Document an extension

Documentation is an essential part of an extension. Learn how to document an extension and publish the documentation on