API Reference > imodeljs-frontend > Tiles > TileAdmin > TileAdmin.Props > contextPreloadParentDepth contextPreloadParentDepth contextPreloadParentDepth: undefined | number Preloading parents for context (reality and map tiles) will improve the user experience by making it more likely that tiles in nearly the required resolution will be already loaded as the view is manipulated. This value controls the depth above the the selected tile depth that will be preloaded. The default value (2) with default contextPreloadParentDepth of one will load only grandparents and great grandparents. This generally preloads around 20% more tiles than are required. Default value: 2. Minimum value 0. Maximum value 8. alpha Defined in core/frontend/src/tile/TileAdmin.ts Line 1031 Last Updated: 29 November, 2022