A few days ago, developer Felix Krause shared a detailed report on how mobile apps can use their own in-app web browser to track user data. Now Krause is back with a new tool that lets anyone see ...

The command line allows you to enter and execute JavaScript commands straight from the Firebug sidebar. The functions available in the API allows you to maneuver, monitor and investigate web page ...

What is a Bookmarklet? The term bookmarklet comes from the words bookmark and applet, and is a browser bookmark that contains JavaScript commands to extend the browser’s functionality.