Attention

TYPO3 v8 has reached its end-of-life March 31st, 2020 and is not maintained by the community anymore. Looking for a stable version? Use the version switch on the top left.

There is no further ELTS support. It is recommended that you upgrade your project and use a supported version of TYPO3.

File system conventions

There are certain conventions about naming files and directories in the TYPO3 core and extensions. Some of them are historical and do not follow other formal rules. They will be described separately. New core classes and extensions are required to follow the formal rules outlined below.

• TYPO3 directory structure
• TYPO3 files and user files
• Extension directory structure
• File names