problems with the photos

so we had a problema with the photos that we put in our web page, like the one from the home page, main pictures or the ones describing the clothes that ¨we sell¨.
so basically so what we did was to copy and paste the photos from the internet, and like that every time that we openend our page the photos took some time to charge, and if you clik in them they are link to another web page, the one that we copied them from.
all of that happened that what we did was copy and paste every photo instead of saving them as a JPG, and because of that we had all those problems.