kraken-free
Use kraken.io Free Online Image Optimizer to optimize your JPEG and PNG images.
File size limit: <= 1MB
CLI
npm i -g kraken-free
kraken png/example.png
API
var kraken = ;
kraken.checkIfImage(filename)
arguments:
filename - required, path to image file to check
returns
true if the file exists and is a JPEG or PNG file, otherwise false
kraken.getCookies()
arguments: none
returns:
a promise resolves to a cookie string:
XSRF-TOKEN= ... ; kraken_sid= ...
kraken.upload(cookie, filename, options)
arguments:
cookie - required, string from getCookies()
filename - required, path to image file to upload
options - optional, pass { lossy: true } to set optimization mode to lossy, default is false (loseless).
returns:
a promise resolves to a JSON-parsed object from upload API response:
{
"optimizedSize": 2704,
"originalSize": 2821,
"url": "https://dl.kraken.io/web/31/a1f3a034098dfb795e43d48cfbdea2/example.png",
"thumb": "https://dl.kraken.io/web/31/a1f3a034098dfb795e43d48cfbdea2/thumb.png",
"status": "kraked"
}
kraken.download(url, dest)
arguments:
url - required, URL to download
dest - required, local path to save the file
returns:
a promise resolves to an object:
{
"dest": "kraked/example.png"
}
Example
var kraken = ;kraken;