TYPO3 Extension jh_captcha Use Google reCAPTCHA (v2/v3) in your own TYPO3 extensions, EXT:form, EXT:powermail and EXT:formhandler as spam protection. Documentation EN - 4.0 DE - 4.0 Installation Composer Do composer require haffner/jh_captcha in your composer based TYPO3 root. TYPO3 Extension Repository (TER) Download and install the extension from TER.