gm-native

Native binding for GraphicsMagick++. Some details can be found in this blog post.

Quick usage:

 
var gm = require('gm-native');
 
var outputBuffer = gm.convert(
  // Required. Can also be URL, file path or Buffer object. Note that GM is IO-blocking so using path/URL will block the process
  'test.jpg',
  // Required. Operations, just like arguments you'd pass to `convert` process
  ['scale', '100x100^', 'quality', 75, 'format', 'WEBP', 'extent', '100x100', 'CenterGravity', 'blurSigma', 5],
  // Required, callback function
  callbackFn
});

Supported methods

NOTE: Orders do matter

• ['strip']
• ['interlace', '<interlaceType>']
• ['scale', '<width>x<height><flag>']
• ['extent', '<width>x<height', '<gravity>']
• ['format', '<JPG/PNG/WEBP>']
• ['quality', '<0 - 100>']
• ['filter', '<filter types>']
• ['blurSigma', '<blurSigma>']

TODO

• Figure out optional width & height
• More tests
• Composite (for rounded corners...)