---
title: "Installation"
manual: "SEO"
version: "main"
permalink: "https://docs.typo3.org/permalink/typo3/cms-seo:installation@main"
source: "Installation/Index.rst"
rendered: "2026-09-19T11:14:59+00:00"
---

# Installation {#installation}

Target group: **Administrators**

This extension is part of the TYPO3 Core.

**Table of contents**

-   [Installation with Composer](https://docs.typo3.org/permalink/typo3/cms-seo:installation-with-composer@main)
-   [Installation without Composer](https://docs.typo3.org/permalink/typo3/cms-seo:installation-without-composer@main)

## Installation with Composer {#installation-with-composer}

Check whether you are already using the extension with:

```bash
composer show | grep seo
```

This should either give you no result or something similar to:

```none
typo3/cms-seo       v12.4.11
```

If it is not installed yet, use the `composer require` command to install
the extension:

```bash
composer require typo3/cms-seo
```

The given version depends on the version of the TYPO3 Core you are using.

## Installation without Composer {#installation-without-composer}

In an installation without Composer, the extension is already shipped but might
not be activated yet. Activate it as follows:

1.  In the backend, navigate to the **System > Extensions**
    module.
1.  Click the **Activate** icon for the SEO extension.

![Extension manager showing SEO extension](../Images/InstallActivate.png)