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TFW file (TIFF World File) is a text file used in GIS to store geographic reference information of TIFF format raster images. It defines the mapping relationship between pixel coordinates and geographic coordinates through affine transformation parameters. is a text file used in GIS to store geographic reference information of TIFF format raster images. It defines the mapping relationship between pixel coordinates and geographic coordinates through affine transformation parameters.

FBN file is a format used for visualization and management of 3D models and geospatial data, mainly suitable for the management and display of large-scale 3D scenes and city models. This format is optimized to efficiently load and render large volumes of data, and is widely used in fields such as GIS (Geographic Information System) and digital twins. FBN files can package and store model data, texture information, geographic coordinates, attribute data, etc., so that high-speed rendering can be achieved while maintaining 3D scene reproducibility and data consistency.

BMP file (bitmap file, extension: .bmp) is a file format for storing bitmap images, developed by Microsoft. It is widely used as a standard image format in Windows environment, mainly used to process uncompressed raster images. Since BMP files store each pixel data of the image as it is, they can display high-quality and lossless images, but the file size is often large.

SBN files are spatial data index files used in ArcGIS software by Esri and exist as part of SHP files (Shapefiles). SBN files mainly store spatial index information and play a role in accelerating the spatial query and display speed of Shapefiles.

FBX (FilmBox) is a file format for 3D models, animations, and scenes. It is a universal exchange format developed by Autodesk for sharing and transferring data between different 3D software. The FBX format supports a variety of elements including geometric shapes, materials, animations, bones, etc., and can preserve the associations and hierarchical structures between these elements.

**PRJ **(Projection) file is one of the common file formats in Geographic Information System (GIS), which is used to store spatial reference information and coordinate system definition. PRJ is the abbreviation of Projection, which is usually used with other geographic data files (such as vector data, raster data, etc.) to determine the geographic location and coordinate system of the data.

SBX (Shapefile Index (.sbx)) is an index file used in GIS (Geographic Information System) to improve the access speed of Shapefile (vector data storage format) data. It is a common vector data format used to store geospatial data. It consists of multiple files, including .shp, .shx and .dbf files. Among them, the .shx file is the SBX file, which stores the offset and length information of each geometric object in the .shp file in binary format.

JPEG (Joint Photographic Experts Group) is a file format widely used for digital image compression, with the extension “.jpg” or “.jpeg”. It was developed by the Joint Photographic Experts Group established in 1986 and was officially adopted as an international standard (ISO/IEC 10918-1) in 1992. JPEG mainly uses lossy compression, which can significantly reduce the size of image files with a high compression rate. Therefore, it is widely used in digital cameras, websites, social media and other fields.

WT file is a tile data format mainly used for 3D tile maps and geographic information systems (GIS), designed for efficient display and distribution of large-scale geospatial data. This file format is the abbreviation of Web Tile and is widely used in web-based 3D visualization platforms and geospatial applications. Especially in GIS platforms such as Wings Engine, the WT format is adopted to efficiently distribute large-scale 3D city models and geospatial data.

**WP **files are a specific file format for managing and displaying 3D tile data and spatial information. This format is mainly used in geographic information systems (GIS) and 3D visualization platforms, and is designed to efficiently display and distribute large-scale geographic data and city models. WP files store sliced 3D models and texture information, and are suitable for managing and distributing large-scale geographic data sets. Especially in Web-based geographic information visualization and real-time rendering, WP files are widely used due to their lightweight and high-speed display characteristics.