Yes, your website needs an SSL certificate!
Websites without an SSL certificate are classified as insecure by common browsers. Your website visitors will either not be able to access your website or will receive a security warning (“This website is not trustworthy!”).
Websites with an SSL certificate ensure that an encrypted and secure connection is established between the browser and your website. This creates trust with your visitors, and search engines (such as Google, Bing, ...) also rank your website higher in search results.
world4you offers various SSL certificates.