  We introduce a new family of Generalised Parton Distribution models able to
fulfil by construction all the theoretical properties imposed by QCD. These
models are built on standard Parton Distribution Functions and extended to
off-forward kinematics through a well-defined procedure. We apply this strategy
on the pion, first handling a simple but insightful algebraic model, and then
exploiting state-of-the-art computations obtained in continuum QCD. We compare
these models with a more standard one relying on an xFitter extraction of the
pion Parton Distribution Functions. The results for both quark and gluon
Generalised Parton Distributions are presented and exploited for calculation of
Electromagnetic, Gravitational and Compton Form Factors. Results on the latter
highlight the relevance of next-to-leading order corrections, even in the
so-called valence region.
