The process for obtaining large-format and thin thickness glazed ceramic slabs comprises steps of: predisposing a flat support of vitrified ceramic material having desired dimensions and thickness, applying, on at least a surface portion of said support, a glaze having a fusible base and metal pigments having a glazing temperature (TV) lower than a vitrification temperature (TG) of said support, subjecting the product obtained to a heat treatment, conducted at a firing temperature (T2) equal to the glazing temperature (TV) of said glaze.