How to do composite with gm node.js?

Question

How to do \'gm composite -gravity center change_image_url base_image_url\' with GM Node.js?

How to call gm().command() & gm().in() or <

Answer 1

If you want to resize and merge, you can use this:

gm()
.in('-geometry', '+0+0')
.in('./img/img1.png')
.in('-geometry', '300x300+100+200')
.in('./img/img2.png')
.flatten()
.write('resultGM.png', function (err) {
  if (err) console.log(err);
});