Online tool that lets you test a webpage and detects performance and front-end code quality issues.

The tool loads the given URL via PhantomJS (a headless browser) and collects various metrics and statistics with the help of Phantomas. These metrics are categorized and transformed into scores. It also gives in-depth details so developpers can correct the detected issues.

By the way, it's free because we are geeks, not businessmen. All we want is a ★ on GitHub, it will boost our motivation to add more awesome features!!!

This is the best way to discover the tool: http://yellowlab.tools.
Please note the server is hosted in Baltimore, USA.

Might be useful if you want to build an automation tool. The documentation is here.

Can be used to build automation tools in NodeJS. The documentation is here.

Hosted on our http://yellowlab.tools server, it is a RESTful API that allows you to launch distant tests. The documentation is here.

If your project is not accessible from outside, or if you want to fork and improve the tool, you can build your own instance. The documentation is here.

There are so many things left to do, your help would be greatly appreciated! Please report bugs, ask for evolutions and come code with me.

Please read the license.
Icons are the property of IcoMoon.io

Gaël Métais. I'm a webperf freelance based in Paris. If you understand french, you can visit my website.

• Achraf Ben Younes achrafbenyounes