Documentation

Browser-based GIS workstation — no install, no server, no account. Load Shapefile, GeoJSON, FlatGeobuf, KMZ, GPX and more; visualize on a WebGL2 3D globe; export to 8 formats. Powered by GeoPBF and Ortho-Map.

A Protocol Buffers-based geospatial binary format extending the GeoJSON structure. Lightweight (~1/10 the size of GeoJSON) for fast transfer. Supports bidirectional converters to common GIS formats. Can also store image files such as icons.

Protocol Buffers-based raster elevation tiles. 3-tier zoom LOD, GEBCO + ALOS dual sources, Int16 delta encoding with deflateRaw compression. Worker zero-copy transfer for high-throughput terrain rendering.

Geographic Interleaved Binary Format — a 64-bit binary format combining Morton-coded spatial indexing with Visvalingam–Whyatt LOD weighting. Realizes a dynamic LOD and stencil-based polygon fill pipeline in WebGL.

A WebGL map rendering framework for orthographic (globe view) projection. Composites WebGL base map rendering, WebGL vector rendering (Gint), and more via a Worker-based parallel pipeline. Natively integrates GeoPBF / AltPBF data formats.