Stacked rest-frame UV spectra of the new Euclid quasars. The top panel shows the stacked rest-frame UV spectra of all new Euclid quasars, the z > 7 sample, and the z < 7 sample. The bottom panel compares the stacked spectrum of all new quasars with a stacked spectrum of z > 6.5 bright quasars from Onorato et al. (2025). Each spectrum was shifted to the rest frame, re-binned onto a common grid with Δv = 300 km s⁻¹, and scaled to match a fiducial absolute magnitude of M₁₄₅₀ = −24. We show the median-stacked results here. No significant evolution is identified with these stacked spectra.