His artistic approach relied on a delicate use of the etching needle to capture the soft transitions of light and shadow found in Baroque painting. Unlike the bold lines common in earlier woodcuts, Giovannini used fine hatching to create tonal depth. He often worked with Marcantonio Chiarini to combine figure drawing with architectural backgrounds. This partnership resulted in prints that recorded the spatial complexity of grand Italian interiors. His work documented the Italian artistic canon for a wider audience of collectors and scholars.

For the modern collector, these prints offer a connection to the tradition of the Grand Tour. His etchings provide a window into the monumental art of the Italian Renaissance and Baroque periods. The compositions remain balanced and clear, making them suitable for various interior styles. Because they were originally intended to document great works of art, they possess a quiet, academic quality. They appeal to those who value historical accuracy and classical draughtsmanship in their home decor.