The Javascript Object Browser is a free Chrome add-on designed specifically for JavaScript developers, particularly those who are new to the language. This tool enables users to effortlessly browse through the default JavaScript library as well as any local or online libraries. It operates offline and utilizes the 'for (in)' statement to reflect on types, ensuring compatibility with any library. Users can easily list and load JavaScript libraries, while also accessing the contents of non-native functions in a summary panel, enhancing their coding efficiency.

In addition to its browsing capabilities, the app allows users to load JSON from files or by pasting it directly into a designated box. This feature enables editing of string and number values, with the ability to copy the modified JSON object for further use. The application also provides permissions for all aspects of a Chrome web app, allowing navigation through Chrome Extension APIs and testing them in the JavaScript console. Users can save pages for use in other browsers, enhancing its utility.