Examples of source spectra from SDSS overplotted with the best-fit SEDs from CIGALE v2022.0 in the optical range. Top panel: For two non-HBL RL quasars from our sample. Middle panel: For two non-HBL RQ quasars from our sample. Bottom left panel: For one HBL RL quasar from our sample. Bottom right panel: For one HBL RQ quasar from our sample. Our SED modelling based on the photometric data is successful in reproducing the quasar spectra.