Disk Usage Sunburst is a WordPress plugin designed to help users visualize the file structure of their WordPress installations. It presents all files and directories in a unique Sunburst Chart format, allowing users to easily identify the size of each file or directory. By hovering over the arcs of the chart, users can see the exact sizes, making it simple to locate larger files that may be consuming storage space.

The plugin features interactive zoom capabilities, enabling users to click on an arc to zoom in for a closer look at specific directories or files, and a click on the center circle allows users to zoom back out. This functionality is particularly beneficial for maintaining the efficiency of a WordPress site by identifying large files that may need attention.