Formatter Toolbox is a versatile browser extension designed for developers and tech enthusiasts, allowing users to format, decode, and visualize several data formats such as JSON, XML, Base64, and JWT tokens seamlessly. This tool eliminates the need for external applications by providing instant formatting results directly within the browser, enhancing overall productivity. Key features include syntax highlighting and a user-friendly interface accessible from a convenient popup window.

The extension supports multiple themes, allowing users to toggle between light, dark, or auto modes, and includes a custom color picker for personalized highlight colors. Additionally, it offers a one-click copy feature for formatted output, making it an efficient choice for developers, testers, API users, and data analysts. With its focus on simplicity, privacy, and efficiency, Formatter Toolbox stands out as a must-have tool in the browser add-ons category.