---
title: "Feature: #86303 - Variants for site's base"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:feature-86303"
source: "Changelog/9.5/Feature-86303-VariantsForSitesBase.rst"
typo3-version: "9.5"
typo3-major: 9
type: "feature"
issue: 86303
forge: "https://forge.typo3.org/issues/86303"
tags: ["Backend", "Frontend", "TypoScript", "ext:core"]
rendered: "2026-09-17T21:17:42+00:00"
---

# Feature: #86303 - Variants for site's base {#feature-86303-variants-for-site-s-base}

See [forge#86303](https://forge.typo3.org/issues/86303)
See [forge#87831](https://forge.typo3.org/issues/87831)

## Description {#description}

The site configuration allows to specify variants of the site's base.
Take the following example: The base of a site is set to `https://www.domain.tld` but the staging environment uses
`https://staging.domain.tld` and the local development uses `https://www.domain.local`.

The expression language feature is used to define which variant is taken into account.

Update since TYPO3 9.5.5:

This is also possible for site languages (however only via editing the respective `config.yaml` file
manually, not via the TYPO3 Backend yet). See example yaml file below.

## Impact {#impact}

The base of a site can be changed depending on a condition. Typical examples are:

-   `applicationContext == "Production"`: Check the application context
-   `getenv("mycontext") == "production`: Check a custom environment variable

This is an example where the default site has base variants, but also a translation (in this case German)
has a custom domain or sub-domain instead of a first part of the path segment of the URL.

```yaml
rootPageId: 1
base: 'https://www.example.com/'
baseVariants:
  -
    base: 'https://example.local/'
    condition: 'applicationContext == "Development"'
  -
    base: 'https://staging.example.com/'
    condition: 'applicationContext == "Production/Sydney"'
  -
    base: 'https://testing.example.com/'
    condition: 'applicationContext == "Testing/Paris"'
languages:
  -
    title: 'Global'
    enabled: true
    languageId: '0'
    base: /
    typo3Language: default
    locale: en_UK.UTF-8
    iso-639-1: en
    navigationTitle: English
    hreflang: gb-en
    direction: ''
    flag: gb
  -
    title: 'DE'
    enabled: true
    languageId: '1'
    base: https://example.de/'
    baseVariants:
      -
        base: 'https://de.example.local/'
        condition: 'applicationContext == "Development"'
      -
        base: 'https://staging.example.de/'
        condition: 'applicationContext == "Production/Sydney"'
      -
        base: 'https://testing.example.de/'
        condition: 'applicationContext == "Testing/Paris"'
    typo3Language: de
    locale: de_DE.UTF-8
    iso-639-1: de
    navigationTitle: Deutsch
    hreflang: de-de
    direction: ''
    fallbackType: strict
    flag: de
```