Install the extension using composer:

composer require "dmitryd/dd-deepl"

Add the static TypoScript template from EXT:dd_deepl/Configuration/TypoScript/ to your site

Go to and sign up. Get a free API key.

Configure API key in the TypoScript constants like this:

module.tx_dddeepl.settings.apiKey = <Insert your API key here>

If you use a free API key, change the API host like this:

module.tx_dddeepl.settings.apiUrl =

You can also set DeepL API key and host via web server environment varables TYPO3_DEEPL_API_KEY and TYPO3_DEEPL_URL.