---
title: "Howto"
manual: "TYPO3 Explained"
version: "11.5"
permalink: "https://docs.typo3.org/permalink/t3coreapi:extension-howto@11.5"
source: "ExtensionArchitecture/HowTo/Index.rst"
rendered: "2026-10-21T15:30:00+00:00"
---

> [!WARNING]
> **Attention**
>
> TYPO3 v11 has reached end-of-life as of October 31th 2024 and
> is no longer being maintained. Use the version switcher on the top
> left of this page to select documentation for a supported version of TYPO3.
>
> Need more time before upgrading?
> You can purchase Extended Long Term Support (ELTS) for TYPO3 v11 here:
> [TYPO3 ELTS](https://typo3.com/services/extended-support-elts).

# Howto {#extension-howto}

Helps you kickstart your own extension or sitepackage. Explains how
to publish an extension. Contains howto for different situations
like creating a frontend plugin, a backend module or to extend
existing TCA.

-   [Backend modules](https://docs.typo3.org/permalink/t3coreapi:backend-modules-1@11.5)
    -   [Backend interface](https://docs.typo3.org/permalink/t3coreapi:backend-interface@11.5)
    -   [View registered modules](https://docs.typo3.org/permalink/t3coreapi:view-registered-modules@11.5)
    -   [Backend module API](https://docs.typo3.org/permalink/t3coreapi:backend-module-api@11.5)
    -   [Backend Template View (Extbase)](https://docs.typo3.org/permalink/t3coreapi:backend-template-view-extbase@11.5)
    -   [Backend module API (Extbase)](https://docs.typo3.org/permalink/t3coreapi:backend-module-api-extbase@11.5)
    -   [Register a toplevel module (Extbase)](https://docs.typo3.org/permalink/t3coreapi:register-a-toplevel-module-extbase@11.5)
    -   [The Backend Template View (core)](https://docs.typo3.org/permalink/t3coreapi:the-backend-template-view-core@11.5)
    -   [Backend module API (core)](https://docs.typo3.org/permalink/t3coreapi:backend-module-api-core@11.5)
    -   [Tutorials](https://docs.typo3.org/permalink/t3coreapi:tutorials@11.5)
-   [Events](https://docs.typo3.org/permalink/t3coreapi:events@11.5)
-   [Extending the TCA array](https://docs.typo3.org/permalink/t3coreapi:extending-the-tca-array@11.5)
    -   [Storing the changes](https://docs.typo3.org/permalink/t3coreapi:storing-the-changes@11.5)
    -   [Customization Examples](https://docs.typo3.org/permalink/t3coreapi:customization-examples@11.5)
    -   [Verifying the TCA](https://docs.typo3.org/permalink/t3coreapi:verifying-the-tca@11.5)
-   [Frontend plugin](https://docs.typo3.org/permalink/t3coreapi:frontend-plugin@11.5)
    -   [AbstractPlugin](https://docs.typo3.org/permalink/t3coreapi:abstractplugin-1@11.5)
-   [Localization](https://docs.typo3.org/permalink/t3coreapi:localization@11.5)
    -   [Multi-language Fluid templates](https://docs.typo3.org/permalink/t3coreapi:multi-language-fluid-templates@11.5)
    -   [Localization in PHP](https://docs.typo3.org/permalink/t3coreapi:localization-in-php@11.5)
    -   [TypoScript](https://docs.typo3.org/permalink/t3coreapi:typoscript@11.5)
-   [Publish your extension](https://docs.typo3.org/permalink/t3coreapi:publish-your-extension@11.5)
    -   [Publish your extension in the TER](https://docs.typo3.org/permalink/t3coreapi:publish-your-extension-in-the-ter@11.5)
-   [HTTP requests to external sources](https://docs.typo3.org/permalink/t3coreapi:http-requests-to-external-sources@11.5)
-   [Update your extension for new TYPO3 versions](https://docs.typo3.org/permalink/t3coreapi:update-your-extension-for-new-typo3-versions@11.5)
    -   [Extension scanner](https://docs.typo3.org/permalink/t3coreapi:extension-scanner-1@11.5)
    -   [Upgrade wizards](https://docs.typo3.org/permalink/t3coreapi:upgrade-wizards-1@11.5)
        -   [The concept of upgrade wizards](https://docs.typo3.org/permalink/t3coreapi:the-concept-of-upgrade-wizards@11.5)
        -   [Creating upgrade wizards](https://docs.typo3.org/permalink/t3coreapi:creating-upgrade-wizards@11.5)
-   [Configuration](https://docs.typo3.org/permalink/t3coreapi:configuration@11.5)
-   [Creating a new distribution](https://docs.typo3.org/permalink/t3coreapi:creating-a-new-distribution@11.5)
-   [Creating a new extension](https://docs.typo3.org/permalink/t3coreapi:creating-a-new-extension@11.5)
-   [Custom Extension Repository](https://docs.typo3.org/permalink/t3coreapi:custom-extension-repository-1@11.5)
-   [Adding documentation](https://docs.typo3.org/permalink/t3coreapi:adding-documentation@11.5)
-   [Extension management](https://docs.typo3.org/permalink/t3coreapi:extension-management@11.5)