The awesome JPEG minifying power of mozjpeg wrapped up as a .pipe friendly node duplex stream.
Grab flying pugs over http and automagically minify them with mozjpeg before letting them near your hard drive.
var fs = require('fs')
var http = require('http')
var mozjpeg = require('mozjpeg-stream')
http.get('http://aboutpug.com/wp-content/uploads/2015/01/flying-monkey-cute-pug.jpg')
.on('response', function (resp) {
resp
.pipe(mozjpeg())
.pipe(fs.createWriteStream('flying-pug.min.jpg'))
})And so this chunky 1.5M of raw pug
...becomes 132K of optimal, progressive, mozjpeg'd, flying pug:
mozjpeg sets the compression quality to 75 by default, but you can adjust it:
fs.createReadStream('flying-pug.jpg')
.pipe(mozjpeg({quality: 50}))
.pipe(fs.createWriteStream('flying-pug.q50.jpg'))So you can wring out further byte savings, and for many pictures, nothing of importance is lost...
84K of -quality 50, piped, progressive, mozjpeg'd, flying pug
mozjpeg-stream wraps the most excellent mozjpeg module by the imagemin crew, which in turn wraps mozjpeg from the most excellent Mozilla. So it's good stuff all the way down.
- https://blog.mozilla.org/research/2014/07/15/mozilla-advances-jpeg-encoding-with-mozjpeg-2-0/
- https://hacks.mozilla.org/2014/08/using-mozjpeg-to-create-efficient-jpegs/
- https://github.com/mozilla/mozjpeg/blob/7faa703ebf7360e5c0a37d71a74c293232998340/usage.txt#L68
A (╯°□°）╯︵TABLEFLIP side project.