A Node.js + ImageMagick script for resizing images for Android apps.
Added by ktiniatros: If you are working with iOS apps too, you usually get the assets for iOS first. So, its handy to be able to generate the android assets from the @3x files(optional, this script works anyway with any file names as long as their extensions are jpg,jpeg or png). I went one step further and made this script to copy the generated files to the appropriate mipmap folders of your android project so you won't have to copy them manually everytime. Just change the androidStudioPath variable to your android studio workplace path. Everytime you need to generate assets, the script promts you to type the folder name of the project the assets are for.
Questions/remarks/feedback: kwdikoi ατ gmail ντοτ com
Install ImageMagick for Node.js.
npm install imagemagick
ImageMagick for Node.js requires ImageMagick CLI tools to be installed. There are numerous ways to install them. For instance, if you're on OS X you can use Homebrew:
brew install imagemagick
Run this script in a directory with some images.
node AndroidImageResizer.js
Enter starting image size when prompted.
Enter current image size [xxxhdpi, xxhdpi, xhdpi, hdpi, mdpi, ldpi]: xxhdpi
Enter smallest desired image size when prompted.
Enter smallest desired image size [xxxhdpi, xxhdpi, xhdpi, hdpi, mdpi, ldpi]: mdpi
Some folders will appear in your directory with all of your resized images.
The MIT License (MIT)
Copyright (c) 2014 Matthew Logan
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.