International audienceHierarchical Progressive Surveys (HiPS) have become a widely used standard for storing and exploring large image surveys in the last decade. This success is a combined effect of different tools and contexts (the possibility of tile by tile visualisation, the evolution of HiPS clients (e.g. Aladin Desktop, Aladin Lite, firefly, WWT), the IVOA context and standardisation...). Among these, the HiPSgen tool has had a special role. HiPSgen enables anyone to easily transform a set of individual images into a HiPS and its usage has enabled the creation of a vast collection of surveys