TYPO3 v9 has reached its end-of-life September 30th, 2021 and is not maintained by the community anymore. Looking for a stable version? Use the version switch on the top left.

You can order Extended Long Term Support (ELTS) here: TYPO3 ELTS.

Yaml Coding Guidelines

Yaml is (one of the languages) used for configuration in TYPO3.

Directory and File Names

  • Files have the ending .yaml.


  • Use spaces, not tabs

  • Indent with 2 spaces per indent level

  • Use single (' ') for defining string values. Double quotes can be used for quotes inside of quotes:

description: 'This is a "salt" used for various kinds of encryption ...'

More Information

  • See Setup IDE / Editor in this manual for information about setting up your Editor / IDE to adhere to the coding guidelines.