FlatGeobuf to GeoJSON
FlatGeobuf to GeoJSON parses a single-layer .fgb vector file into GeoJSON. Drop a file — conversion runs automatically — then check the feature count…
Processing and data safety
Section titled “Processing and data safety”This tool runs entirely in your browser — your files are never uploaded to a server.
Input and output
Section titled “Input and output”- Formats: FlatGeobuf, GeoJSON
- Flow: FlatGeobuf (.fgb) → GeoJSON
How to use
Section titled “How to use”- Drop a .fgb file into the dropzone — conversion starts automatically.
- The GeoJSON text appears in the output area when reading finishes, with a summary of feature count, geometry types and bounding box.
- Check the data on the map preview, then copy the text or download it as a .geojson file.
Key details and limits
Section titled “Key details and limits”- In-browser conversion is bounded by device memory.
- No reprojection — coordinates are written as-is from the file.
- A .fgb file contains a single layer.
Common use cases
Section titled “Common use cases”- Drop in a .fgb → the output area shows the feature/geometry-type/bbox summary and GeoJSON text → check the map preview → copy or download .geojson