README
image-min 
Minify GIF, JPEG and PNG images seamlessly with Node.js.
Install
npm install --save image-min
Usage
var fs = require('fs');
var imagemin = require('image-min');
var path = require('path');
var src = fs.createReadStream('img.gif');
var ext = path.extname(src.path);
src
.pipe(imagemin({ ext: ext }))
.pipe(fs.createWriteStream('img-minified' + ext));
API
imagemin(opts)
Optimize a GIF, JPEG, or PNG image by providing a an ext. Use the
options below (optionally) to configure how your images are optimized.
Options
ext
Type String
Default: undefined
File extension used by imagemin to determine which optimizer to use.
interlaced (GIF only)
Type: Boolean
Default: false
Interlace gif for progressive rendering.
pngquant (PNG only)
Type: Boolean
Default: false
Whether to enable pngquant lossy compression.
progressive (JPEG only)
Type: Boolean
Default: false
Lossless conversion to progressive.