Portugal Is on the EU Standard
35x45mm — unlike Spain next door.
Portugal uses the 35x45mm ICAO photo shared across the EU. Spain, its only land neighbour, kept the smaller 26x32mm format for the passport and DNI.
That makes the Iberian border one of the sharper photo-spec discontinuities in Europe. If you hold documents on both sides, or had photos taken in Spain, measure before reusing them.
