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World heritage sites are monuments and natural landscapes recognised by all humanity as being of outstanding significance and universal value. Spatial technology provides new ideas for the conservation and sustainable development of world heritage sites. Using a bibliometric analysis, this study extracted 401 relevant documents from the Web of Science database from 1990–2022. Meta information, such as abstracts, keywords of the papers were extracted and cleaned using bibliometric package and analysed the applications, partnerships and development trends of existing spatial technologies for world heritage sites. The results of the study show the “4D” characteristics of space technology in world heritage sites: (1) Development: Spatial applications in world heritage sites have gradually developed with an annual growth rate of 10.22% during the period 1990–2022. (2) Discrepancy: More than 70 per cent of countries have not been able to fully apply space technology on the ground at world heritage sites. (3) Desirability: Shared exchanges between research institutions are rare, and more cooperation and exchanges are expected, especially between transnationals. (4) Diversity: The future outlook for technology will be multidisciplinary, multi-method integrated research.