You are probably already familiar with SSL technology. SSL (Secure Socket Layer) is used to encrypt sensitive personal information (like security number, credit card) sent between a website and a user’s computer. Website owners can also use SSL certificate to improve their Google ranking.
How to convert http to https using SSL read at https://www.worksforweb.com/company/news/2017/06/06/secure-your-site-and-improve-your-google-ranking/