---
title: "How-to guides for extension developers"
manual: "TYPO3 Explained"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3coreapi:extension-howto@main"
source: "ExtensionArchitecture/HowTo/Index.rst"
rendered: "2026-09-22T15:26:06+00:00"
---

# How-to guides for extension developers {#extension-howto}

Helps you kickstart your own extension or site package. 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@main)
    -   [Modules.php](https://docs.typo3.org/permalink/t3coreapi:backend-module-configuration-examples@main)
    -   [Plain controller](https://docs.typo3.org/permalink/t3coreapi:create-a-backend-module-with-core-functionality@main)
    -   [Extbase controller](https://docs.typo3.org/permalink/t3coreapi:create-a-backend-module-with-extbase@main)
    -   [Security Considerations](https://docs.typo3.org/permalink/t3coreapi:security-considerations@main)
    -   [Tutorials](https://docs.typo3.org/permalink/t3coreapi:tutorial-backend-module-registration@main)
-   [Events](https://docs.typo3.org/permalink/t3coreapi:using-and-dispatching-events-in-extensions@main)
-   [Model extensions](https://docs.typo3.org/permalink/t3coreapi:extending-an-extbase-model@main)
-   [Extend TCA](https://docs.typo3.org/permalink/t3coreapi:extending-the-tca-array@main)
    -   [Storing modifications](https://docs.typo3.org/permalink/t3coreapi:storing-modifications@main)
    -   [Customization examples](https://docs.typo3.org/permalink/t3coreapi:customization-examples@main)
    -   [Verifying the TCA](https://docs.typo3.org/permalink/t3coreapi:verifying-the-tca@main)
-   [Frontend plugin](https://docs.typo3.org/permalink/t3coreapi:frontend-plugin@main)
-   [Localization](https://docs.typo3.org/permalink/t3coreapi:localizing-your-extension@main)
    -   [Multi-language Fluid templates](https://docs.typo3.org/permalink/t3coreapi:multi-language-fluid-templates@main)
    -   [Localization in PHP](https://docs.typo3.org/permalink/t3coreapi:localization-in-php@main)
    -   [TypoScript](https://docs.typo3.org/permalink/t3coreapi:typoscript@main)
-   [Publishing](https://docs.typo3.org/permalink/t3coreapi:publish-your-extension@main)
    -   [Publish your extension in the TER](https://docs.typo3.org/permalink/t3coreapi:publish-your-extension-in-the-ter@main)
-   [External HTTP requests](https://docs.typo3.org/permalink/t3coreapi:http-requests-to-external-sources@main)
-   [Update](https://docs.typo3.org/permalink/t3coreapi:update-your-extension-for-new-typo3-versions@main)
    -   [Extension scanner](https://docs.typo3.org/permalink/t3coreapi:extension-scanner-1@main)
    -   [Upgrade wizards](https://docs.typo3.org/permalink/t3coreapi:upgrade-wizards-1@main)
        -   [Concept](https://docs.typo3.org/permalink/t3coreapi:the-concept-of-upgrade-wizards@main)
        -   [Implementation](https://docs.typo3.org/permalink/t3coreapi:implementing-an-upgrade-wizard@main)
        -   [Examples](https://docs.typo3.org/permalink/t3coreapi:examples-for-common-upgrade-wizards@main)
-   [Configuration](https://docs.typo3.org/permalink/t3coreapi:configuration-methods-for-extensions@main)
-   [Distributions](https://docs.typo3.org/permalink/t3coreapi:creating-a-new-distribution@main)
-   [Extension repositories](https://docs.typo3.org/permalink/t3coreapi:custom-extension-repository-1@main)
-   [Documentation](https://docs.typo3.org/permalink/t3coreapi:adding-documentation@main)