DiskLens — Disk Space Analyzer for Windows

Free disk space analyzer for Windows - find what fills your drive

⬇ Download for Windows — free, no ads, no account, no sign-up. One small file, unzip and run.

What it does

• Scan any drive or folder and sort items by real size
• Folder sizes are summed from everything inside them
• Clean, readable list - biggest space hog on top
• No installer bloat, runs on low-end machines
• Read-only: it never deletes anything on its own
• Free and open source, no ads and no telemetry

How to use

1. Open DiskLens.
2. Press Browse and pick a drive or folder.
3. Press Scan - every item is listed with its real size, biggest first.
4. Folder sizes include everything inside them, so you see the true space hog.

Requirements

Windows 10 or 11, 64-bit. No admin rights needed and nothing is written to the registry. It runs fine on weak, old and budget machines.

Privacy

Everything happens on your PC. Nothing is uploaded, there is no telemetry, no ads and no account.

Licence

MIT — free to use, free to share.