Find what's bloating your JSON & XML files.

Ever opened a multi-megabyte config, API response, or data export and wondered where all those bytes are hiding? Tree Size gives you the answer instantly — an interactive, ranked breakdown of every key and element by size, right inside VS Code.

Free and open-source. Processing is local, and your file contents are not uploaded by the extension. Built as a solo project by Alvaro Enrique Ruano. Try the live preview below or install directly from the marketplace.