geojson-minifier is a small utility that minifies GeoJSON files by encoding(delta and zigzag)
geometries. Depending on data, you can shrink file size up to 2-4 times, sometimes even more. Use it to speed up load time of your web application.
Either fetch source code or install with npm:
npm install -g geojson-minifierThis will give you geojson-minifier command.
Use geojson-minifier from command line passing -o, -f and -p parameters(operation, input file, decimal precision).
When dealing with coordinate systems where decimal precision is important, like WGS84, use parameter -p to specify
number of decimal places that utility should retain. The default is 0.
geojson-minifier -o pack -f <filename> -p 6This will create minified version <filename>.packed in the same folder as input file. To unpack use following:
geojson-minifier -o unpack -f <filename>.packed -p 6If you want to integrate geojson-minifier into existing application you can use 2 methods that API exposes - pack and unpack:
var GeojsonMinifier = require('geojson-minifier');
var minifier = new GeojsonMinifier({ precision: 6 });
var packed = minifier.pack(<geojson-object>);
var unpacked = minifier.unpack(<geojson-object>);