Move screenshots to folder based on size

index.js

// Run `npm install --save image-size mv` to install mv (for easily moving files) and image-size (for determining image dimensions)

var fs = require("fs")
var mv = require("mv")
var sizeOf = require('image-size');
var dest = 'C:\\Users\\David\\Downloads' // The location of your downloads folder in Firefox.

// Watch the folder and report when an event has happened
fs.watch(dest, (event, filename) => {
  // Try block because I'm lazy. This did exactly what I needed.
  try {
    // The filename and the type of event it is (change, rename etc.)
    console.dir("Found " + filename + ". Event is " + event)
    // Get the dimensions of the file that just changed
    var dimensions = sizeOf(dest + "\\" + filename);
    // For switch, and possibly for our filename if we wanted
    dim = dimensions.width + "x" + dimensions.height
    
    // Go through and find out what the size is
    switch (dim) {
        case "640x920":
            // Move the file out of the downloads folder and into a sub-folder called 3.5. Don't make the dir if it exists, and ignore all errors
            mv(dest + "\\" + filename, dest + "\\3.5\\" + filename, {mkdirp: false}, function(err) { })
            break;
        case "640x1096":
            mv(dest + "\\" + filename, dest + "\\4\\" + filename, {mkdirp: false}, function(err) { })
            break;
        case "750x1334":
            mv(dest + "\\" + filename, dest + "\\4.7\\" + filename, {mkdirp: false}, function(err) { })
            break;
        case "1242x2208":
            mv(dest + "\\" + filename, dest + "\\5.5\\" + filename, {mkdirp: false}, function(err) { })
            break;
        case "1536x2008":
            mv(dest + "\\" + filename, dest + "\\iPad\\" + filename, {mkdirp: false}, function(err) { })
            break;
        case "2048x2732":
            mv(dest + "\\" + filename, dest + "\\iPad Pro\\" + filename, {mkdirp: false}, function(err) { })
            break;
    }
  
  } catch(ex) {
    // We don't care about errors. lulz lazy programming
  }
});