JSON Viewer (V3) is a free Chrome extension designed to enhance the readability of JSON and JSONP data. With features such as syntax highlighting, collapsible nodes, and clickable URLs, this tool allows users to navigate complex data structures easily. It supports 26 built-in themes, enabling customization to suit individual preferences, and includes a toggle button for switching between raw and highlighted views.

In addition to its core functionality, JSON Viewer (V3) offers advanced features like a scratch pad for indefinite JSON formatting, options for displaying line numbers, and the ability to sort JSON by keys. Users can also configure settings for maximum JSON size and customize tab size. The extension's open-source nature allows for community contributions and transparency, making it a robust choice for developers and data analysts alike.