Editor's Review
The best way to speed up a sluggish PC is not to buy a new one. It is to clear out the digital junk you have accumulated over months of browsing and installing. CCleaner does exactly that. I ran a Custom Clean on my work laptop, and it cleared gigabytes of temporary files, browser caches, and Windows logs—all with a few clicks. The Health Check scanned for outdated apps and privacy trackers, and I chose which fixes to apply.
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CCleaner Standard Tips
Run Health Check first, don’t jump straight to full custom clean. The guided scan points out the biggest issues first, and it’s way harder to accidentally delete something important. Get comfortable with the basics before you start tweaking every checkbox.
Always review what you’re deleting, especially cookies. It’s easy to accidentally wipe all your saved website logins if you leave every cookie box checked. Glance through the results before you hit the clean button.
Tame your startup programs first. You’ll feel a bigger difference from disabling three useless startup apps than you will from cleaning gigabytes of temp files. It’s the fastest, most noticeable performance win in the whole app.
Back up the registry before you fix it. The tool is safe, but it takes two seconds to create a backup, and it saves you from trouble if something goes wrong.
Don’t run it every day. Once a week or once every two weeks is more than enough. Frequent cleaning doesn’t help anything and just wastes time.
Where a lot of new users get the most tangible value, though, is the built-in Startup Manager. Most people don’t realize how many apps set themselves to launch on boot by default, and every one of them slows down your startup and eats RAM in the background. CCleaner lists every single startup program in one place, and you can disable the ones you don’t need with one click. Trim three or four unnecessary apps, and you’ll see faster boot times and snappier general performance immediately. It’s a way bigger quality-of-life upgrade than just deleting temp files, and a lot of users sleep on it entirely.
The Health Check feature is another solid addition, acting like a quick once-over for your whole system. It scans for outdated apps, privacy trackers, and unused programs that are hogging resources, and lays out suggested fixes in plain language. Nothing gets changed without your explicit approval, so you don’t have to worry about the tool automatically deleting something important. It’s a great starting point for new users who aren’t sure what they should be cleaning in the first place.
For more advanced maintenance, there’s a safe Registry Cleaner built in. Messing with the Windows registry is usually a bad idea for beginners, but this tool scans only for clearly invalid entries — broken shortcuts, leftover software settings, missing file references — and lets you review every item before fixing anything. It’s one of the safer registry cleaners out there, and it can clear up random small errors and crashes over time. You also get basic privacy tools to wipe browsing history, autofill data, and session cookies, plus a built-in uninstaller that does a better job cleaning up leftovers than the default Windows tool.
