Installation with Joomla

Via a field for custom code in the template, or by your agency in the template itself.

Requirement: An account with administrator rights.

Not possible here: Joomla itself has no field for custom code, and according to the Joomla forum neither does the bundled Cassiopeia template. So it depends on your template.

Step by step

1. In the Joomla backend open “System” → “Site Template Styles” (in Joomla 3: “Extensions” → “Templates” → “Styles”) and click your template.
2. In the template’s settings look for a field for custom code. Many purchased templates have one; it is often called “Custom Code”, “Before </body>” or “Tracking Code”.
3. Paste the line of code there, preferably at the place for the end of the page, and save.
4. If your template has no such field, your web designer adds the line to the template’s “index.php” file, directly before </body>, in a copy of the template so that an update does not overwrite it. Use the button “Create an email to my web designer” for this.
5. Clear the Joomla cache and open your website in a new window.

Your line of code

Good to know

• A “Custom” HTML module is not suitable: as a rule, Joomla’s editor removes scripts when saving.
• The Joomla Extensions Directory has extensions that put code on every page. We have not checked them.

Source: Joomla! Forum: Adding Google code inside Cassiopeia tag head/body · Joomla! Forum: Code above closing head tag. How to add it?, read on 13 Oct 2026. The Joomla documentation has no page of its own on this; the information comes from the official Joomla forum. Not yet clicked through by us in an account with this provider. If a step is different for you, please write to us.