img.js

var path = require('path');
var Jimp = require("jimp");
var gd = require('node-gd');
var gm = require('gm').subClass({imageMagick: true});

const width = 800;
const height = 100;
const fontSize = 64;
const text = 'LABEL 1232-235-123 GD';



//----------gm-----------



gm(width, height, "#ffffff")
.font(fontPath)
.fontSize(fontSize)
.fill('#000000')
.drawText(0, fontSize, text)
.write("gm.png", function (err) {
});

//--------jimp-------------


var image = new Jimp(width, height, 0xFFFFFFFF, function (err, image) {
  var self = this;
  Jimp.loadFont(Jimp.FONT_SANS_64_BLACK).then(function (font) {
    self.print(font, 0, 0, text).write("jimp.png");
  });
});

//----------gd-----------

var img = gd.createSync(width, height);

img.colorAllocate(255, 255, 255);

var txtColor = img.colorAllocate(0, 0, 0);

var fontPath = path.resolve(__dirname, 'OpenSans-Regular.ttf');

img.stringFT(txtColor, fontPath, fontSize * 0.75 , 0, 0, fontSize, text); //point not pixel

img.savePng('gd.png', 1, function(err) {
  if(err) {
    throw err;
  }
});