---
title: "Site package"
manual: "TYPO3 Explained"
version: "12.4"
permalink: "https://docs.typo3.org/permalink/t3coreapi:site-package@12.4"
source: "ExtensionArchitecture/SitePackage/Index.rst"
rendered: "2026-10-21T15:29:37+00:00"
---

> [!WARNING]
> **Attention**
>
> TYPO3 v12 has reached end-of-life as of April 30th 2026 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 v12 here:
> [TYPO3 ELTS](https://typo3.com/services/extended-support-elts).

# Site package {#site-package}

A site package is a custom TYPO3 extension that contains files regarding the
theme of a site.

**Subpages**

-   [Introduction](https://docs.typo3.org/permalink/t3coreapi:introduction-into-using-site-packages@12.4)

**Table of content**

-   [Site package tutorial](https://docs.typo3.org/permalink/t3coreapi:site-package-tutorial-1@12.4)
-   [Site package builder](https://docs.typo3.org/permalink/t3coreapi:site-package-builder@12.4)

## Site package tutorial {#site-package-tutorial}

The [site package tutorial](https://docs.typo3.org/m/typo3/tutorial-sitepackage/12.4/en-us/Index.html#start) teaches you step by step
how to create a custom site package from scratch. You can download the
example site package created in this tutorial from GitHub and try it out:
[https://github.com/TYPO3-Documentation/site_package/tree/main](https://github.com/TYPO3-Documentation/site_package/tree/main)

## Site package builder {#extension-sitepackage-builder}

You can use the [https://www.sitepackagebuilder.com/](https://www.sitepackagebuilder.com/) to generate a site package
for you. This is a quick way to generate a custom site package based on
[`typo3/cms-fluid-styled-content`](https://packagist.org/packages/typo3/cms-fluid-styled-content) or [`bk2k/bootstrap-package`](https://packagist.org/packages/bk2k/bootstrap-package).

There are however some down sides:

-   At the time of writing it is impossible to create a site package for TYPO3 v13.
-   A large number of unnecessary, mostly empty files are being generated.
-   Depending on your prior knowledge you use code that you might not fully understand.