A proxy is a service that hides your IP address and allows anonymous browsing over the Internet. However, the service doesn’t completely hide your internet browsing. You can use this service only for changing your IP address. This service doesn’t hide your browsing history from your ISP (Internet service provider).
Proxy (HTTP): http://proxy.nikigre.si
Proxy (HTTPS): https://www.proxy.nikigre.si
So when you open the website you can enter a website you wish to proxy. After that website will open normally only address to the website will change. So it will look like this: