Mondadori is mainly known as a book publishing company; under the Mondadori name there are over 30 publishing houses and relative imprints in the book sector. In 2014, the subsidiary company Mondadori Libri S.p.A. was established in order to group the Mondadori books segment and the pre-existing publishers Giulio Einaudi Editore, Sperling & Kupfer, Piemme, Electa and Mondadori Education. In April 2016, Rizzoli Libri was bought by the company and added to Mondadori Libri S.p.A. In 2015, Mondadori covered about 24 percent of the book market share. Mondadori publishes both paper books and e-books: in 2015, 2.2 million Mondadori e-books had been downloaded. Mondadori also has a great eye when it comes to bestselling books: in 2016, the company published the greatest number of titles of the list of 100 bestselling books in Italy.
Mondadori boasts a great number of published and digital magazines, including fashion, cooking, design, science and education, in both Italy and in France. This makes them the leading magazine publisher in Italy, with a 31.2 percent market share in 2015 in terms of circulation. Mediaset also became the first Italian digital publisher following the acquisition of Banzai Media digital brands in July 2016. The revenue generated by the sale of magazines has remained quite stable over the years, reaching about 161.1 million euros in the first half of 2016.
Mondadori has an important online presence. The weekly woman magazine Grazia, for example, registered 18,823 unique daily internet visits from personal computers in May 2016. During the same month, the cooking website Giallo Zafferano registered 361,413 unique daily internet visits from mobile phones.