---
title: Spelling TYPO3 correctly
url: "https://typo3.com/typo3-cms/the-brand/how-to-spell-typo3"
description: TYPO3 is always written in uppercase, with no spaces. This rule covers all products under the TYPO3 project. URLs are the only exception to this rule.
image: "https://typo3.com/_assets/d1e01514e4c4a5b3147940fa2ec50682/Images/og-image-com.jpg"
date: 2025-11-03
modified: 2025-11-04
categories:
  - The Project
---

# Spelling TYPO3 correctly

How to Spell TYPO3
====================

 Uppercase, No Space
---------------------

**TYPO3 is always written in uppercase**, with no spaces. This rule covers all products under the TYPO3 project. URLs are the only exception to this rule.

A complete product name should have "TYPO3" as the first word, for example "TYPO3 CMS".

The number "3" is a part of the product name. It is not a version number.

Read about the [history of the TYPO3 name](https://typo3.com/typo3-cms/the-typo3-story).

 Dos and Don'ts
----------------

#### The Right Way

- "TYPO3 CMS"
- "TYPO3 CMS 8 LTS"
- "We use TYPO3 CMS for all our sites."
- "We use TYPO3 for all our sites." (Informal only.)

#### The Wrong Way

- "Typo3 is great" (Correct: "TYPO3 is great")
- "I use typo3" (Correct: "I use TYPO3")
- "TYPO 3" (Correct: "TYPO3")
- "Type03" (Correct "TYPO3")

 Exceptions for URLs
---------------------

#### Always Lowercase

- "www.typo3.domain"
- "typo3.domain"
- “Visit typo3.domain”

#### Never Mixed Case

- "Go to this page at Typo3.domain" (Correct: "Go to this page at typo3.domain")
- "TYPO3.domain" (Correct: "typo3.domain")
- "www.Typo3.domain" (Correct: "www.typo3.domain")
- "www.TYPO3.domain" (Correct: www.typo3.domain")
- "WWW.TYPO3.DOMAIN" (Correct: www.typo3.domain")