Using mapbox static API:
https://api.mapbox.com/styles/v1/mapbox/streets-v10/static/geojson(%7B%22type%22:%20%22FeatureCollection%22,%20%22features%22:%20[%7B%22geometry%22:%20%7B%22type%22:%20%22Point%22,%20%22coordinates%22:%20[20.85,%2037.82]%7D,%20%22type%22:%20%22Feature%22,%20%22properties%22:%20%7B%7D%7D,%20%7B%22geometry%22:%20%7B%22type%22:%20%22Point%22,%20%22coordinates%22:%20[22.86,%2036.8]%7D,%20%22type%22:%20%22Feature%22,%20%22properties%22:%20%7B%7D%7D,%20%7B%22geometry%22:%20%7B%22type%22:%20%22Point%22,%20%22coordinates%22:%20[21.58,%2037.68]%7D,%20%22type%22:%20%22Feature%22,%20%22properties%22:%20%7B%7D%7D,%20%7B%22geometry%22:%20%7B%22type%22:%20%22Point%22,%20%22coordinates%22:%20[21.84,%2039.56]%7D,%20%22type%22:%20%22Feature%22,%20%22properties%22:%20%7B%7D%7D,%20%7B%22geometry%22:%20%7B%22type%22:%20%22Point%22,%20%22coordinates%22:%20[23.68,%2035.23]%7D,%20%22type%22:%20%22Feature%22,%20%22properties%22:%20%7B%7D%7D,%20%7B%22geometry%22:%20%7B%22type%22:%20%22Point%22,%20%22coordinates%22:%20[22.77,%2037.67]%7D,%20%22type%22:%20%22Feature%22,%20%22properties%22:%20%7B%7D%7D,%20%7B%22geometry%22:%20%7B%22type%22:%20%22Point%22,%20%22coordinates%22:%20[17.08,%2040.61]%7D,%20%22type%22:%20%22Feature%22,%20%22properties%22:%20%7B%7D%7D,%20%7B%22geometry%22:%20%7B%22type%22:%20%22Point%22,%20%22coordinates%22:%20[22.56,%2040.06]%7D,%20%22type%22:%20%22Feature%22,%20%22properties%22:%20%7B%7D%7D,%20%7B%22geometry%22:%20%7B%22type%22:%20%22Point%22,%20%22coordinates%22:%20[22.54,%2040.39]%7D,%20%22type%22:%20%22Feature%22,%20%22properties%22:%20%7B%7D%7D,%20%7B%22geometry%22:%20%7B%22type%22:%20%22Point%22,%20%22coordinates%22:%20[23.67,%2037.98]%7D,%20%22type%22:%20%22Feature%22,%20%22properties%22:%20%7B%7D%7D]%7D)/auto/500x300?access_token=########