GitHub File Size Viewer is a practical Chrome extension designed to enhance the experience of browsing GitHub repositories. By displaying the sizes of files and folders, this tool provides users with valuable insights into the storage requirements of their projects. It effectively utilizes the GitHub API to fetch relevant data, ensuring accurate size calculations, including for nested directories. With the ability to show sizes in KB, MB, or GB, users can easily assess the scale of their repositories at a glance.

The extension is user-friendly and straightforward to set up. After installing it from the Chrome Web Store, users are prompted to enter their GitHub Personal Access Token, which is optional but recommended to help bypass API rate limits. Once installed, the sizes of files and folders appear next to each item in the repository's file list, making it a valuable tool for developers who need to manage their GitHub storage efficiently.