A number of approaches have been developed for the fabrication of highly porous structures. These techniques include methods such as electrospinning, gas foaming, phase separation, solvent casting-particulate leaching, or freeze-drying [19–23]. Among them, we have selected different pro-cesses to obtain porogen templates that provide the hydrogel with a controlled porosity and interconnectivity with steps as fast and clean as possible, which enable simple, efficient and uniform seeding of cells into the hydrogel and hydrogel biofunctionalization. In this work hydrogel microporous scaffolds with different porosities were fabricated by using photocrosslinked PEG and three different porogens: salt templates, paraffin templates, and gelatin microparticles. The hydrogels synthesized with templates can be functionalized before or after their synthesis and subsequently seeded, while those that use gelatine microparticles allow the in situ cell encapsulation and functionalization into the same hydro-gel synthesis process by photocrosslinking. The characterization of the morphology, pore size, mechanical properties and swelling of the resulting hydrogels was performed.