HTTP:-
Http stands for Hyper Text Transfer Protocol. It allows World Wide Web users to transferring information like image, text, video, music, graphic and other files on web pages. Http is basically used to access html pages and also other resources can be accessible using HTTP.
HTTPS:-
HTTPS stands for Hypertext Transfer Protocol Secure. HTTPS is a protocol which uses an encrypted HTTP connection by transport-layer security.
Sometimes, the clients may be exchanging private information with a server, which needs to be secured for preventing some hacking issue.