A printer-publisher is a company or person that prints and / or publishes postcards. There are generally more publishers than printers. Publishers are the customers of printers. It is not always easy to distinguish a card publisher from its printer when only one name is present on the card. This is why, in addition to printers and publishers, the site has introduced the notion of printer-publisher to facilitate research. When the role is uncertain it is necessary to check the box editor and printer of the form.

Often printers edited their cards. In order to facilitate research, all printers and publishers are included in a single file, some references can have both roles. For example Désiré Van Dantzig at the beginning did not print his cards, he bought them in Germany and had the cards bought stamped with D.V.D. Subsequently he printed and edited his own cards and finally he no longer edited cards and was content to print them on order (in this case the publisher is the one who ordered the cards)