The Digital DJ Web Application is a DJ application that allows a user to mix 2 songs together. Unlike most DJ applications available today, the Digital DJ Web Application is a web-based application, built using a React user interface, an Express JS web server and MySQL database. This application aims to address some of the drawbacks of existing desktop DJ applications such as cross-platform support, and a cluttered user interface. Since this is a web-based application, it can theoretically be run on any device with a powerful web browser. In the following document it will be shown that modern browsers can run an application of this scale.