image-card-png.js

var fs = require('fs');
var Canvas = require('canvas')
  , Image = Canvas.Image
  , canvas = new Canvas(400, 600)
  , ctx = canvas.getContext('2d');


var te = ctx.measureText('Awesome!');
ctx.strokeStyle = 'rgba(0,0,0,0.5)';
ctx.beginPath();
ctx.lineTo(50, 102);
ctx.lineTo(50 + te.width, 102);
ctx.stroke();

// console.log('<img src="' + canvas.toDataURL() + '" />');
var squid = fs.readFileSync('./squid.png');
ctx.beginPath();
ctx.font = '30px Impact';
ctx.fillText("Awesome!", 100, 70);

ctx.font = '30px Impact';
ctx.fillText("Awesome Text!", 100, 400);

img = new Image;
img.src = squid;
ctx.drawImage(img, 10, 100, img.width, img.height );

var fs = require('fs')
  , out = fs.createWriteStream(__dirname + '/text.png')
  , stream = canvas.pngStream();

stream.on('data', function(chunk){
  out.write(chunk);
});

stream.on('end', function(){
  console.log('saved png');
});