Have you ever looked on google for a picture, saved it and then published it on your website? If so, you may be using a Copyright picture. There are actually laws that could get you in trouble for using for using a Copyrighted pictures.
The good news is, if you are in fact using a picture you took randomly on the internet, it is not too late to change it. Here are a couple of things that could help you while using pictures for your website, or even school project.
1 – You can take pictures from a public domains. These sites let people put pictures that are up for grabs, that the copyright has been removed or has never been put on the picture. You just need to read the License or fine prints of the website, so that you know that these pictures are safe to use.