uploader.js

var xhr = new XMLHttpRequest();        
xhr.open('GET', 'http://image.torrent.kg/images/U8x5261.png', false);
xhr.responseType = 'arraybuffer';        
xhr.send();
var blob = new WebKitBlobBuilder();  
blob.append(xhr.response);          
var file = blob.getBlob('image/png');
console.log(file)
var fd = new FormData();
fd.append("image[0]", file);
var xhr2 = new XMLHttpRequest();
xhr2.open('POST', 'http://image.torrent.kg/api/upload', false);  
xhr2.send(fd);
console.log(xhr2.responseText);