node package manager


sz Build Status

Determine the size of an image

Depends on node-canvas which has special build instructions as it requires Cairo to be installed on your system.


  • crp crops images
  • rsz resizes images
  • thmb makes thumbnails from images

API & Example

You may provide either a String specifying the path to the image or a Buffer containing the image data and you will receive an object with 'height' and 'width' properties on your callback

var sz = require('sz')
  , fs = require('fs')
sz('/path/to/nyancat.gif', function (err, size) {
  // where `size` may look like: { height: 280, width: 400 } 
var buf = fs.readFileSync('/path/to/nyancat.gif')
sz(buf, function (err, size) {
  // where `size` will be the same as above 


sz is Copyright (c) 2013 Rod Vagg @rvagg and licensed under the MIT licence. All rights not explicitly granted in the MIT license are reserved. See the included LICENSE file for more details.