Mug shots are available online for public viewing on public and private websites. State and local law enforcement agencies and departments frequently post the booking photographs of current inmates on their websites. Additionally, there are privately owned websites that serve as repositories for mug shots of past inmates.
Privately owned mug shot websites make money either by selling the advertisement slots that surround the photos or by allowing former inmates to purchase the removal of the image.
Mug shot websites can be found by searching Google for mug shots in the appropriate city or state. Alternatively, search for a specific inmate by typing the name and "mug shot."