Johannes Gutenberg is credited with inventing the movable-type printing press in the mid-15th century. This invention revolutionized printing and made the mass production of books and other printed materials possible. Gutenberg's printing press used moveable type made of metal instead of wooden blocks, which allowed for faster and more efficient printing. His invention had a significant impact on the spread of knowledge and information, helping to advance the Renaissance and the Reformation. Gutenberg's creation is widely considered one of the most important inventions in human history.