The importance of paradata and metadata in fully complying with FAIR data principles is clear, particularly within the context of 3D models that are shared online through platforms such as Sketchfab [1], where it is expected that other users will want to use/reuse the models. Paradata and metadata serve crucial roles in elucidating the decision-making process behind the design and reconstruction of 3D models depicting historical sites or objects. The process of optimizing 3D models significantly impacts the documentary value and authenticity of the final model. Understanding the dynamics is essential for transparency and reliability in representing cultural heritage. At the same time, integrating metadata into an immersive web-based platform presents challenges as it risks disrupting the narrative flow. This paper uses the case study of the UNESCO Dive into Heritage (DIH) project, which combines reused existing 3D models, newly acquired 3D data captured by UNESCO, and original 3D models by UNOSAT to create an immersive experience. This paper aims to start a discussion about best practices on the representation of paradata on websites like the DIH platform that will enrich the user experience while ensuring scholarly rigor and authenticity are maintained throughout the exploration of cultural heritage and their narratives.