Left: effective radius r_e, FIR vs. stellar mass M_⋆. Centre: r_e, FIR vs. r_e, UV. The blue symbols represent the r_e, FIR vs. the optical radius r_e, opt, with r_e, opt from the empirical JWST mass−size relation (Ward et al. 2024) given the stellar masses of our sources. Right: r_e, FIR vs. r_e, [CII]. The ALPINE galaxies continuum detected at S/N > 4.5 have been considered for the size analysis. The unresolved sources are reported as empty circles. Both r_e, UV and r_e, [CII] are from Fujimoto et al. (2020) and only the sources with a reliable measurements (flag = 0) have been considered.