Patrimonio Digital Complutense (PDC) is the portal for the dissemination of the digital bibliographic heritage of the Complutense Library.

The Library of the Complutense University of Madrid has created a valuable heritage collection throughout its history and, in the same way, has been a pioneering institution in the digitisation of its bibliographic heritage. Result of various digitisation projects of the bibliographic heritage initiated in 1995, the dissemination of this rich collection is carried out in PDC.