Compress images on client side before uploading [closed]
I just developed a javascript library called JIC to solve that problem. It allows you to compress jpg and png on the client side 100% with javascript and no external libraries required!
You can try the demo here : http://makeitsolutions.com/labs/jic and get the sources here : https://github.com/brunobar79/J-I-C
You might be able to resize the image with canvas and export it using dataURI. Not sure about compression, though.
Take a look at this: Resizing an image in an HTML5 canvas