Pulp magazines were inexpensive fiction magazines that were published from 1896 until around 1955. The term "pulp" derives from the cheap wood pulp paper on which the magazines were printed. In contrast, magazines printed on higher-quality paper were called "glossies" or "slicks". The typical pulp magazine had 128 pages; it was 7 inches (18 cm) wide by 10 inches (25 cm) high, and 0.5 inches (1.3 cm) thick, with ragged, untrimmed edges. Pulps were the successors to the penny dreadfuls, dime novels, and short-fiction magazines of the 19th century.

Penny dreadfuls were cheap popular serial literature produced during the 19th century in the United Kingdom. The pejorative term is roughly interchangeable with penny horrible, penny awful, and penny blood. The term typically referred to a story published in weekly parts of 8 to 16 pages, each costing one penny. The subject matter of these stories was typically sensational, focusing on the exploits of detectives, criminals, or supernatural entities. First published in the 1830s, penny dreadfuls featured characters such as Sweeney Todd, Dick Turpin, Varney the Vampire, and Spring-heeled Jack.