Photometric decomposition of miniJPAS data from three SDSS quasars. Top, middle, and bottom panels: results for a quasar at low, intermediate, and high redshift, respectively. Blue and purple lines show miniJPAS photospectra and SDSS spectra, respectively, black lines display best-fitting continua, and orange, green, and red lines denote best-fitting Hβ, Mg II, and C IV emission lines. Error bars show 1σ-equivalent uncertainties. Despite the limited spectral resolution of J-PAS filters, we can readily see that best-fitting lines precisely capture the broad component of quasar emission lines in SDSS spectra.