His style is defined by a rhythmic use of line and a preference for mythological subjects. In works like Gevleugelde grijsaard omvat naakte jonge vrouw, he uses ink washes to create volume. He often depicted scenes from classical history, such as Coriolanus door zijn moeder Veturia en zijn vrouw Volumnia gesmeekt Rome te sparen. His figures possess a theatricality that predates the later Rococo movement. He used a monochromatic palette to focus on composition. This approach makes his drawings feel like preparatory sketches for stage productions.

Modern collectors value Boitard for the clarity of his draughtsmanship. His prints, such as Christ Revealing the Prophets of the Old Testament to the Virgin, offer a window into the transition from Baroque drama to a decorative style. The monochromatic nature of his ink and wash works fits well in contemporary interiors. These pieces provide a sense of history. His focus on line and form allows these prints to complement various decor styles. They are an excellent choice for those who appreciate the technical skill of the early eighteenth century.