You could try to reduce the size with TopoJSON https://github.com/topojson/topojson-simplify https://github.com/topojson/topojson-simplify https://medium.com/

You could try to reduce the size with TopoJSON https://github.com/topojson/topojson-simplify https://github.com/topojson/topojson-simplify https://medium.com/@mbostock/command-line-cartography-part-1-897aa8f8ca2c https://medium.com/@mbostock/command-line-cartography-part-1...