Junk Cleaner

What is "junk"?

As Windows runs, programs create temporary files for things like update downloads, crash reports, thumbnails, installer remnants, and working copies of documents. Most of those files were meant to be cleaned up — but often aren't. Over months and years this digital sawdust piles up. A year-old Windows install can easily be carrying 10–50 GB of unnecessary files that the user will never miss.

The Junk Cleaner safely targets known-to-be-disposable locations only. It does not touch your documents, photos, music, or application settings.

The categories it can clean

• User and System Temp folders (%TEMP%, C:\Windows\Temp)
• Windows Update leftovers — installed update caches that can be recreated on demand.
• Delivery Optimization cache — peer-to-peer download files from Windows Update.
• Recycle Bin (empties the recycle bin on all drives).
• Error reports and memory dumps — only useful to Microsoft support.
• Windows.old — the old Windows install kept for 10 days after a feature update, typically 20+ GB.
• Thumbnail cache — Explorer regenerates this automatically.
• Font cache, Store cache, Event Log cache, Prefetch — various Windows-maintained caches that rebuild themselves.
• Installer remnants from third-party apps that didn't clean up after themselves.

How to use it

1. Go to Clean → Junk Cleaner.
2. Click Scan. TuneBit measures every category without deleting anything, then shows you the size of each.
3. Uncheck anything you'd rather keep (for example, leave Windows.old alone if your new feature update is less than a week old and you might want to roll back).
4. Click Clean. The live log on the right shows exactly what's being removed.
5. Check the "Total Reclaimed" number at the bottom when it's finished.