Good to know
Why does a near-full drive slow my computer down?
Windows constantly needs free space for the page file (virtual memory), temporary files, and updates. When a drive climbs above roughly 85–90% full (an SSD especially), the system has less room to work and write speed drops. Freeing space back below ~85% usually brings the responsiveness back. The goal is breathing room: enough free space that Windows isn't always scraping for it.
What's actually safe to delete?
Temporary files, the Recycle Bin, Windows Update leftovers, and most app caches are safe to clear. Apps rebuild them as needed. Your Downloads folder is marked "review" because those are your files. Never delete things in Windows, Program Files, or driver folders unless you know exactly what they are. This tool flags the risk level so you don't have to guess.
What are "temp" and "cache" folders?
Temp folders hold short-lived working files that programs forget to clean up. Caches are saved copies of data (web pages, thumbnails, package downloads) kept around to make things faster next time. Both are safe to clear. You'll see a one-time slowdown while they rebuild, and that's it.
Is hosting this page publicly really safe?
Yes. The page is a static shell with no data in it. Your scan output is pasted in your browser and processed right there. It's never uploaded, because the page makes no network calls at all. The only thing that could ever be sensitive is folder names, and those stay on your machine. Use the "Redact" toggle if you want folder paths and your machine name stripped out of the scan too.
How do I undo a cleanup?
Cache and temp deletions can't be "undone," but they're meant to be thrown away. Windows and your apps rebuild them automatically. Items sent to the Recycle Bin can be restored until you empty it. Uninstalled programs can be reinstalled. Nothing this tool suggests touches your personal documents.