CCFinder is short for Creative Commons Finder and it finds pictures published under the Creative Commons License.
Define how you want to use the picture (commercially, if you want to change it, etc.) and only find pictures with appropriate licenses.
CCFinder shows you how pictures are licensed. This way you can ensure if you are allowed to republish the picture and how it is allowed to be used.
CCFinder allows you to put a color filter on the picture, set as wallpaper and indentify the origin of the picture.
Having an image-finding program is an invaluable thing when you need a picture for promotional purposes or a website. This way, you don’t make any legal mistakes. Recommended!