Magento 1 Extension FAQs
Magento Google Invisible reCAPTCHA
How to enable Google reCAPTCHA on the review form?
You can enable Google reCAPTCHA on various forms by adding form selectors in the backend configuration. Go to System > Configuration > Meetanshi > Invisible reCAPTCHA and find the option “Selectors for Forms” and add form action for the review form.