Webspeed uses phantomjs to measure the load performance of a webpage. It can be used as a standalone command line tool, or as an API for your node application.

$ npm install webspeed

This installs phantomjs as well, no need for a separate install!

To use as a CLI, do

$ bin/webspeed <url>

Sample webspeed usage

var webspeed = require('webspeed');
options = { timeout: 30000 } // 30 second timeout is the default
webspeed.run('http://stackoverflow.com', options, function(err, results) {
 console.log(results);
});

All sizes are in bytes, speeds are in Mbps.

Easy peasy.

$ npm run test

Or if you changing lots of things:

$ npm run autotest