Since March 2016, the endpoint has changed. Please upgrade your scripts from http://www.resmush.it/ws.php to http://api.resmush.it/ws.php. The old endpoint will be deprecated on 30th Sept. 2016
You can now specify your compression level for JPG pictures ! Go to API page for more informations.
reSmush.it is a FREE alternative to Yahoo Smush.it (which discontinues on March 2015). This tool provides an online way to optimize pictures size via a documented webservice.
reSmush.it is 100% compatible with old Yahoo Smush.it API.
For a standard call, with a JSON response, you just have to call this url http://api.resmush.it/ws.php and provide the image attribute like one of these options below :
The webservice will return an array of informations about the compressed image (see API page for more informations)
This tool is based on several well-known algorithms such as pngquant, jpegoptim, optipng.
It allows to reduced until 70%-80% the size of uploaded pictures.
You can replace your existing solutions that were running under Smush.it with that reSmush.it. The webservice is fully compatible with the Yahoo's distribution, and it will return more informations about your conversion.