---
title: "Site handling"
manual: "TYPO3 Explained"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3coreapi:sitehandling@main"
source: "ApiOverview/SiteHandling/Index.rst"
modified: "2026-09-14T11:10:56+00:00"
---

# Site handling

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:sitehandling-basics@main)
-   [Creation](https://docs.typo3.org/permalink/t3coreapi:sitehandling-create-new@main)
-   [Base variants](https://docs.typo3.org/permalink/t3coreapi:base-variants@main)
-   [Adding languages](https://docs.typo3.org/permalink/t3coreapi:adding-languages@main)
-   [Error handling](https://docs.typo3.org/permalink/t3coreapi:error-handling@main)
    -   [Page-based error handler](https://docs.typo3.org/permalink/t3coreapi:page-based-error-handler@main)
    -   [Fluid-based error handler](https://docs.typo3.org/permalink/t3coreapi:fluid-based-error-handler@main)
-   [Writing a custom page error handler](https://docs.typo3.org/permalink/t3coreapi:writing-a-custom-page-error-handler@main)
-   [Static routes](https://docs.typo3.org/permalink/t3coreapi:static-routes@main)
-   [Environment variables](https://docs.typo3.org/permalink/t3coreapi:sitehandling-using-env-vars@main)
-   [Usage in TypoScript + Fluid](https://docs.typo3.org/permalink/t3coreapi:sitehandling-intyposcript@main)
-   [Usage](https://docs.typo3.org/permalink/t3coreapi:sitehandling-inconditions@main)
-   [Usage in TCA](https://docs.typo3.org/permalink/t3coreapi:sitehandling-intca@main)
-   [Site sets](https://docs.typo3.org/permalink/t3coreapi:site-sets@main)
    -   [Reusable sets](https://docs.typo3.org/permalink/t3coreapi:site-sets-examples@main)
    -   [Site settings](https://docs.typo3.org/permalink/t3coreapi:sitehandling-settings@main)
    -   [Setting definitions](https://docs.typo3.org/permalink/t3coreapi:site-settings-definition@main)
    -   [Settings editor](https://docs.typo3.org/permalink/t3coreapi:site-settings-editor@main)
    -   [PHP API](https://docs.typo3.org/permalink/t3coreapi:site-sets-php-api@main)
-   [Console tools](https://docs.typo3.org/permalink/t3coreapi:sitehandling-clitools@main)
-   [PHP API](https://docs.typo3.org/permalink/t3coreapi:sitehandling-php-api@main)
-   [Extended configuration](https://docs.typo3.org/permalink/t3coreapi:sitehandling-extendingsiteconfiguration@main)