README.md

geo-file-type

Detect the Types of Geospatial Input, including ASCII Grid, Auxiliary XML, GeoTIFF, JPG, PNG, SHP (Shapefile), and World File

features

• Memory Safe: avoids loading the whole file into memory

usage

const geoFileType = require("geo-file-type");
const fs = require("fs");

const buffer = fs.readFileSync("./data/chattanooga.shp");
const result = geoFileType({
    data: buffer,
    debug: false // set debug to true for extra logging
});
// result is { type: "SHP (Shapefile)" }

file types

Name	Supported
ASCII Grid	Yes
Auxiliary XML	Yes
Cloud Optimized GeoTIFF	Yes
GeoRaster	Yes
GeoJSON	No
GeoTIFF	Yes
NetCDF	Yes
JPG	Yes
PNG	Yes
PRJ	Yes
SHP (Shapefile)	Yes
TopoJSON	No
World File	Yes

further reading:

If you'd like to learn more about the formats, please consult the following:

• ASCII Grid: https://en.wikipedia.org/wiki/Esri_grid
• Cloud Optimized GeoTIFF: https://www.cogeo.org/
• GeoTIFF: https://en.wikipedia.org/wiki/GeoTIFF
• GeoRaster: https://github.com/geotiff/georaster
• GeoJSON: https://geojson.org/
• JPG: https://en.wikipedia.org/wiki/JPEG
• PNG: https://en.wikipedia.org/wiki/Portable_Network_Graphics
• NetCDF: https://en.wikipedia.org/wiki/NetCDF
• TopoJSON: https://github.com/topojson/topojson
• World File: https://en.wikipedia.org/wiki/World_file