https://github.com/tableflip/mozjpeg-stream
:shower: The awesome JPEG minifying power of mozjpeg wrapped up as a `.pipe` friendly stream.
https://github.com/tableflip/mozjpeg-stream
Last synced: 11 months ago
JSON representation
:shower: The awesome JPEG minifying power of mozjpeg wrapped up as a `.pipe` friendly stream.
- Host: GitHub
- URL: https://github.com/tableflip/mozjpeg-stream
- Owner: tableflip
- License: isc
- Created: 2015-07-06T17:04:08.000Z (almost 11 years ago)
- Default Branch: master
- Last Pushed: 2020-02-08T10:46:56.000Z (over 6 years ago)
- Last Synced: 2025-06-25T09:58:25.698Z (12 months ago)
- Language: JavaScript
- Homepage:
- Size: 4.02 MB
- Stars: 16
- Watchers: 6
- Forks: 7
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# mozjpeg-stream
The awesome JPEG minifying power of [mozjpeg](https://www.npmjs.com/package/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.
```js
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](https://raw.githubusercontent.com/tableflip/mozjpeg-stream/master/test/flying-pug.jpg)
...becomes `132K` of optimal, progressive, mozjpeg'd, [flying pug](https://raw.githubusercontent.com/tableflip/mozjpeg-stream/master/test/flying-pug.q75.jpg):
`mozjpeg` sets the compression quality to 75 by default, but you can adjust it:
```js
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](https://raw.githubusercontent.com/tableflip/mozjpeg-stream/master/test/flying-pug.q75.jpg)
## More info
[mozjpeg-stream](https://www.npmjs.com/package/mozjpeg-stream) wraps the most excellent [mozjpeg module](https://www.npmjs.com/package/mozjpeg) by the [imagemin crew](https://github.com/imagemin), which in turn wraps [mozjpeg](https://github.com/mozilla/mozjpeg) from the most excellent [Mozilla](https://www.mozilla.org/en-US/mission/). 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](https://tableflip.io) side project.