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.

Best practices

Following are some good practices for creating custom content element types and plugins and for customizing content elements for usage in the backend.

  • Use a sitepackage extension to maintain your site customization (such as backend layouts, custom content elements etc.)

  • How you structure your extensions depends a little on the use case and if they will be resused in several projects and / or made public. If you create one extension for every custom content element, you may want to think about whether they might be merged into one or more extensions.

  • Do not use deprecated functionality. Read the Core Changelog to check for deprecations and breaking changes between TYPO3 versions.

  • Some naming conventions are described in the chapter Naming Conventions.

  • Read (or skim) the Coding Guidelines.

  • Make it easier for your editors by hiding the following by configuration

    • content elements that should not be used in the "Content Element Wizard"

    • fields that should not be filled out in the backend forms.