Just playing with compression algorythms

index.js

// Load the http module to create an http server.
var http = require('http');
var execFile = require('child_process').execFile;
var exec = require('child_process').exec;
var mozjpeg = require('mozjpeg');

// Configure our HTTP server to respond with Hello World to all requests.
var server = http.createServer(function (request, response) {
    response.writeHead(200, {"Content-Type": "text/plain"});
    response.end("Hello World\n");
});

// Listen on port 8000, IP defaults to 127.0.0.1
server.listen(8000);

// Put a friendly message on the terminal
console.log("Server running at http://127.0.0.1:8000/");

command = './node_modules/.bin/mozjpeg -progressive -quality 75 -optimize -verbose "./source.jpg" > "./output.jpg"';
exec( command, function( err, a, output ) {
    console.log(err);
    console.log(output);
});

command = './node_modules/.bin/pngcrush -q -reduce "./source.png" "./output.png"';
exec( command, function( err, a, output ) {
    console.log(err);
    console.log(output);
});