He initially trained at the Academies of Fine Arts of Lucca and Naples,[1] where he was a long-time resident, but worked most of his life in Milan.
Among his painted works, mainly depicting genre subjects, are: In campo; The Chestnut seller, Note cupe (exhibited in 1898 at Turin), and Miseria stabile.
He contributed in Milan to the monthly and weekly segments of the Corriere della Sera during the editorship of Silvio Spaventa Filippi.
In addition, Salvadori contributed to the weekly Domenica del Corriere and illustrated a number of children's stories for the "Biblioteca dei ragazzi" series (including Alice in Wonderland) of the Istituto Editoriale Italiano, founded and curated by Silvio Spaventa Filippi.
At least three operas by Giacomo Puccini received their definitive 'look' through Salvadori's agency: Edgar (complete scenography, 1889), La Bohème (alternative design for Act II, combining models by Lucien Jusseaume and Albert Dubosq, 1901), and Tosca (alternative design for Act II, 1901).