Born in Mompeo, Caprioli began his career as a fresco painter, before making his professional debut as an illustrator in 1937, in the comics magazine Argentovivo.
[1][2] In 1939 he started collaborating with Il Vittorioso, for which he created the popular series Gino e Piero and Piero il mozzo del sommergibile.
[1][2] He later collaborated with other important publications, notably Topolino, in which he created the critically acclaimed series La tigre del Bengala, L'Audace and Corriere dei Piccoli.
[1][2][3] In the early 1970s he realized comic adaptations of classic adventure novels for Il Giornalino.
[1][2] He also collaborated with international publishers, including Fleetway Publications and Éditions Aventures et Voyages.