AndikaR

var fse = require('fs-extra');
let gm = require('gm');

var readStream = fse.createReadStream('./public/test.png');
gm(readStream, 'test.png')
.borderColor('#000')
.trim()
.crop(50, 50, 0, 0)
.write('./public/test-1.png', function (err) {
  if (!err) console.log('done');