DiskSage: a local AI that explains what is safe to delete on a Windows laptop

Description and use

DiskSage is a local Windows app that scans the PC, uses Gemma 4 to explain findings, and enables safe cleanup of 25.4 GB of junk.

Problem

Users accumulate junk files in downloads, caches, and developer folders, but lack a reliable way to identify what can be safely removed.

Outcome

DiskSage identified 25.4 GB of safe-to-clean space, including large unpacked installers and developer caches, and provided clear explanations for each item.

Workflow

• Scan the file system
• Gemma 4 reviews each finding and provides verdicts and reasons
• Identify mystery folders and recommend actions
• Confirm cleanup selections
• Run official uninstaller for selected apps
• Ask questions about specific folders

Evidence

The first time I ran it on my own laptop, it found 25.4 GB that was safe to clean

Source

Gemma 4, running locally on the laptop

Source

It looks in the places we never check: Downloads, hidden caches, developer leftovers, AI leftovers, mystery folders

Source

On my own laptop, the first scan took 5.5 seconds and found 25.4 GB that was safe to clean

Source