Map Viewer

The map viewer computes a geospatial viewport from latitude, longitude and zoom inputs and returns precise viewport metadata. It supports standard WGS84 coordinates and optional projection parameters, enabling quick validation of location-based questions. Core outputs include the viewport center, the geographic bounds of the visible area, and a scalable metric to estimate distance across the viewport. This is useful for developers prototyping mapping interfaces, educators creating geospatial exercises, and analysts validating coordinate ranges before integrating real tiles.
The tool uses deterministic math for tile-based viewports: converting lat lon to tile coordinates at a given zoom, deriving bounding coordinates, and calculating the approximate ground distance represented by the viewport. It does not fetch imagery, but it produces a reproducible data payload that can be consumed by client apps or test suites.
Users can toggle optional layers and supply bearing or pitch inputs for advanced viewport visualization; outputs include a JSON payload that can be embedded in tests or pipelines.
Typical use cases include validating coordinate inputs, estimating viewport extents for UI design, and comparing how different zoom levels affect visible area.