npm install screenshot-site

let shot = require("screenshot-site") 

shot({
    url: "github.com"
}, function(buffer){
    return console.log(buffer)
})

shot({
    url: "github.com", // isNeed? true
    resolution: "1920x1080", // isNeed? false; default: 1024x768
    scale: 1000, // isNeed? false; default: 1000,
    format: 1, // isNeed? false; default: 0; 0 for JPEG, 1 for PNG
    api: 1, // isNeed? false; default: 0; 0 for "mini", 1 for "api".
    proxy: "http://127.0.0.1:8080" // isNeed? false
}, function(buffer){ 
    return console.log(buffer) 
}) // isNeed? true; response: image buffer