SpaceSniffer Overview
SpaceSniffer is a free, portable disk-space visualization tool for Windows that uses a treemap to show what is taking up room on a drive. After a quick scan, it draws nested rectangles where each file and folder is sized by how much space it occupies, so large items jump out immediately and you can double-click to zoom into folders and explore. It supports filtering by file type, size, or date, and lets you act on files directly. Its visual, interactive approach makes it easy to understand and reclaim disk space, and it runs as a single executable with no installation. The download is the complete SpaceSniffer setup, so it installs offline without pulling extra files. It reacts in real time as you delete files, updating the map so you can watch space being freed immediately. The official SpaceSniffer download is linked on this page, straight from Uderzo IT.
