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What is Pengu Loader?

Pengu Loader (formerly League Loader) is a plugin loader designed specifically for the League of Legends Client.

With Pengu Loader, you can load JavaScript plug-ins into the Client as dependencies, which can help you personalize the look and feel of the Client, load your custom content, add new features, and improve your overall experience. It also allows you to build a smarter Client that fits your needs and preferences.

Key features:

  • Customize League Client with plugins
  • Theme/personalize your Client
  • Support for modern JavaScript features
  • Support for built-in and remote DevTools
  • Easier to work with LCU API


Pengu Loader is a part of our "Programming for gamers" mission.

Why JavaScript?

JavaScript is a versatile and powerful programming language that is widely used in web development. It has become the de facto standard for client-side scripting on the web, allowing developers to create interactive and dynamic web pages.

The main advantage of JavaScript is its compatibility with the League Client Ux, which is actually an embedded Chromium web browser. This means that JavaScript plugins can be easily integrated into the client and run seamlessly alongside the existing client code. In addition, users can leverage the full power of the Chrome DevTools to debug and modify their plugins.

In the case of Pengu Loader, JavaScript provides an ideal platform for customizing the League of Legends Client. By using JavaScript plugins, users can add new functionality, change the look and feel of the client, and even integrate web-based technologies into the client interface. Because JavaScript is a widely-used language with a large community of developers, there are many existing tools and libraries that can be leveraged to enhance the functionality of Pengu Loader.

Our community

Now go to the Installation page to get started.

Released under the WTF License.