tableflip/resize-jpeg

Name: resize-jpeg

Owner: TABLEFLIP

Description: :rainbow: Resize your jpeg and preserve it's original quality

Created: 2015-07-06 13:02:05.0

Updated: 2015-11-18 15:39:54.0

Pushed: 2015-08-09 08:28:00.0

Homepage:

Size: 140

Language: JavaScript

GitHub Committers

User	Most Recent Commit	# Commits

Other Committers

User	Email	Most Recent Commit	# Commits

README

resize-jpeg

You want to resize a jpeg? You want to preserve it's visual quality while doing so?

ze-jpeg -w 800 original.jpg > original.w800.jpg

Resize a jpeg and optimise for the web with mozjpeg

GraphicsMagick (and ImageMagick) dial down the quality of your JPEG files when you resize them.

That's surprising. mozjpeg does a better job of optimising pixels for your eyes, and every byte counts, so instead:

ze-jpeg --minify -w 800 original.jpg > original.w800.min.jpg

That'll generally give a better output jpeg for fewer bytes. Win win!

Get started

Use a sensible package manager for you OS to install http://www.graphicsmagick.org/ Then use npm to install resize-jpeg, globally as a command line tool.

 install graphicsmagick
install -g resize-jpeg
ze-jpeg -w 800 path/to/my/picture

where -w is the new width you'd like proportionally scale the image to. Add a --minify in there to engage mozjpeg minification magic.

Use it as a module!

Add it to your project npm install --save resize-jpeg

Add you now have a transform stream that'll resize internet pugs on the fly:

fs = require('fs')
http = require('http')
resizeJpeg = require('resize-jpeg')

.get('http://aboutpug.com/wp-content/uploads/2015/01/flying-monkey-cute-pug.jpg')
n('response', function (resp) {
resp
  .pipe(resizeJpeg(800))
  .pipe(fs.createWriteStream('webpug.w800.jpg'))

or more simply, just resize jpegs from your local file system

fs = require('fs')
http = require('http')
resizeJpeg = require('resize-jpeg')

reateReadStream('flying-pug.jpg')
ipe(resizeJpeg(800))
ipe(fs.createWriteStream('pug.w800.jpg'))

How does it work?

Under the hood, resize-jpeg is just doing the work of remembering the nasty gm command arguments for you. If you prefer to do it long hand, then it's the same as:

onvert original.jpg -resize 800x800 -define jpeg:preserve-settings - > original.w800.min.jpg

---

A (?°?°???TABLEFLIP side project.