---
title: "Site handling"
manual: "TYPO3 Explained"
version: "14.3"
permalink: "https://docs.typo3.org/permalink/t3coreapi:sitehandling@14.3"
source: "ApiOverview/SiteHandling/Index.rst"
rendered: "2026-10-01T15:20:05+00:00"
---

# Site handling {#sitehandling}

The site handling defines entry points to the frontend sites of a
TYPO3 instance, their languages and routing details. This chapter walks
through the features of the module and goes into API and programming details.

-   [Basics](https://docs.typo3.org/permalink/t3coreapi:site-handling-basics@14.3)
-   [Creation](https://docs.typo3.org/permalink/t3coreapi:creating-a-new-site-configuration@14.3)
-   [Base variants](https://docs.typo3.org/permalink/t3coreapi:base-variants@14.3)
-   [Adding languages](https://docs.typo3.org/permalink/t3coreapi:adding-languages@14.3)
-   [Error handling](https://docs.typo3.org/permalink/t3coreapi:error-handling@14.3)
    -   [Page-based error handler](https://docs.typo3.org/permalink/t3coreapi:page-based-error-handler@14.3)
    -   [Fluid-based error handler](https://docs.typo3.org/permalink/t3coreapi:fluid-based-error-handler@14.3)
-   [Writing a custom page error handler](https://docs.typo3.org/permalink/t3coreapi:writing-a-custom-page-error-handler@14.3)
-   [Static routes](https://docs.typo3.org/permalink/t3coreapi:static-routes@14.3)
-   [Environment variables](https://docs.typo3.org/permalink/t3coreapi:using-environment-variables-in-the-site-configuration@14.3)
-   [Usage in TypoScript + Fluid](https://docs.typo3.org/permalink/t3coreapi:using-site-configuration-in-typoscript-and-fluid-templates@14.3)
-   [Usage](https://docs.typo3.org/permalink/t3coreapi:using-site-configuration-in-conditions@14.3)
-   [Usage in TCA](https://docs.typo3.org/permalink/t3coreapi:using-site-configuration-in-tca-foreign-table-where@14.3)
-   [Site sets](https://docs.typo3.org/permalink/t3coreapi:site-sets-1@14.3)
    -   [Reusable sets](https://docs.typo3.org/permalink/t3coreapi:reusable-site-sets@14.3)
    -   [Site settings](https://docs.typo3.org/permalink/t3coreapi:site-settings@14.3)
    -   [Setting definitions](https://docs.typo3.org/permalink/t3coreapi:site-settings-definitions@14.3)
    -   [Settings editor](https://docs.typo3.org/permalink/t3coreapi:site-settings-editor-1@14.3)
    -   [PHP API](https://docs.typo3.org/permalink/t3coreapi:site-set-php-api@14.3)
-   [Console tools](https://docs.typo3.org/permalink/t3coreapi:cli-tools-for-site-handling@14.3)
-   [PHP API](https://docs.typo3.org/permalink/t3coreapi:php-api-accessing-site-configuration@14.3)
-   [Extended configuration](https://docs.typo3.org/permalink/t3coreapi:extending-site-configuration@14.3)