WhatSize

WhatSize is a macOS‑only utility that scans storage devices and presents a size‑ordered list of files and folders, allowing users to identify the largest items quickly. It offers a column‑based view similar to Finder, enabling drill‑down into directories for more detail without requiring a full rescanning each time.

The application includes cleaning functions that locate common space‑consuming items such as log files, downloads, caches, temporary files, and unnecessary language resources, and it can delete these with a single action. By removing these files, the tool helps users reclaim disk space and improve overall system responsiveness.

Targeted at Mac owners who need to manage disk usage, WhatSize relies on recent macOS technologies to stay compatible with current releases while maintaining a stable, mature codebase.