  Using a symmetry-preserving truncation of the quantum field equations
describing hadron properties, parameter-free predictions are delivered for pion
and kaon elastic electromagnetic form factors, $F_{P=\pi,K}$, thereby unifying
them with kindred results for nucleon elastic electromagnetic form factors.
Regarding positive-charge states, the analysis stresses that the presence of
scaling violations in QCD entails that $Q^2 F_P(Q^2)$ should exhibit a single
maximum on $Q^2>0$. Locating such a maximum is both necessary and sufficient to
establish the existence of scaling violations. The study predicts that, for
charged $\pi$, $K$ mesons, the $Q^2 F_P(Q^2)$ maximum lies in the neighbourhood
$Q^2 \simeq 5\,$GeV$^2$. Foreseeable experiments will test these predictions
and, providing their $Q^2$ reach meets expectations, potentially also provide
details on the momentum dependence of meson form factor scaling violation.
