The depiction of sexual acts is as old as civilization (and can be found painted on various ancient buildings), but the concept of pornography as understood today did not exist until the Victorian era. Previous to that time, though some sex acts were regulated or stipulated in laws, looking at objects or images depicting them was not. In some cases, specific books, engravings or image collections were censored or outlawed, but the trend to compose laws that restricted viewing of sexually explicit things in general was a Victorian construct. When large scale excavations of Pompeii were undertaken in the 1860s, much of the erotic art of the Romans came to light, shocking the Victorians who saw themselves as the intellectual heirs of the Roman Empire. They did not know what to do with the frank depictions of sexuality, and endeavored to hide them away from everyone but upper class scholars. The moveable objects were locked away in the Secret Museum in Naples, Italy and what could not be removed was covered and cordoned off as to not corrupt the sensibilities of women, children and the working class. Soon after, the world's first law criminalizing pornography was enacted by the Parliament of the United Kingdom in 1857 in the Obscene Publications Act. The Victorian attitude that pornography was for a select few can be seen in the wording of the Hicklin test stemming from a court case in 1868 where it asks, "whether the tendency of the matter charged as obscenity is to deprave and corrupt those whose minds are open to such immoral influences." Despite the fact of their suppression, depictions of erotic imagery were common throughout history.

While pornography had seen limited distribution over the Internet in the early 90's often as ASCII porn, it was not until the Internet became more accessible to the general public that Internet pornography became a widespread phenomenon. Online distribution of pornography then often consisted of Internet users uploading scanned photos from adult magazines to Usenet newsgroups. This type of distribution was generally free (apart from fees for Internet access), and provided a great deal of anonymity. The anonymity made it safe and easy to ignore copyright restrictions, as well as protecting the identity of uploaders and downloaders. Around this time frame, pornography was also distributed via pornographic Bulletin Board Systems such as Rusty n Edie's. These BBSes could charge users for access, leading to the first commercial online pornography (though not "Internet pornography," since BBSes were not accessed via the Internet).

The invention of the World Wide Web spurred both commercial and non-commercial distribution of pornography. The rise of pornography websites offering photos, video clips and streaming media including live webcam access allowed greater access to pornography.