CCleaner 5.1

Free CCleaner can help you optimize your computer's performance
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Software Informer Editor Rating 4 Software Informer User Rating 4

CCleaner is a system optimizer, and as other applications of its kind, it aims to increase your computer’s performance by getting rid of unnecessary data. Fortunately, its interface is really straightforward, so it’s practically impossible to lose one’s way.

Perhaps the single procedure with the highest impact on performance is cleaning your system registry of invalid keys and values. Let me tell you that CCleaner is recognized as being one of the best at it. Of course, there’s always the risk of losing an important entry, and that’s why CCleaner lets you back up your registry before actually making any changes. However, although I´ve been using this tool for years now, I’ve never had to undo any registry modifications so far. One thing I don´t like about the registry cleaning process is that sometimes one scan is not enough to fix all the problems. You can notice it when you perform another check right after fixing the problems found in the previous scan.

The program also does its contribution to preserving your privacy. In this regard, cleaning temp files and cache data left by the operating system, browsers and other applications is essential. CCleaner supports all Windows versions as well as various browsers, including Microsoft Edge. Luckily, you can decide what to delete or keep, because some actions like erasing the thumbnail cache may actually decrease speed, as most of the times the system will need to regenerate them. Another feature with a high impact on privacy is wiping all the contents or just the free space on a drive. More than just that, the tool can use three deletion methods, which include an extremely secure 35-pass wiping.

CCleaner also lets you uninstall applications, although I must confess that I would have liked it to allow batch uninstalling. Likewise, you can reduce startup time by preventing some applications to start along with the system. The program can also find duplicate files based on several criteria. In addition, there is a disk analyzer to help you administer disk space more efficiently. Furthermore, you can also manage all your system restore points. This tool can be set to start with Windows and remain hidden at the Tray, from where it can monitor the system and advice you to perform a clean whenever it seems necessary.

As seen, there are several reasons that make CCleaner so popular. First, it definitely optimizes the system in a very safe way without causing unwanted damage. Second, its free version isn’t crippled as it usually happens with other similar tools. Finally, it is very complete in terms of available features.

PC Senior editor
Pedro Castro
Editor rating:

Review summary


  • It is very easy to use
  • Its changes don´t damage the system
  • It has multiple features


  • Sometimes various scans are necessary to solve all registry issues

Comments (257)

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rating Guest
Nice & very good program

Was it helpful?  yes(1) no(0) | Reply
Have full version, very good product! Could have more features for system optimisation though, like offering a driver update package (like it gives recuva e.g separately), though it is excellent for what it does.

Was it helpful?  yes(2) no(3) | Reply
Bjorn I, no way on using CCleaner to update drivers. I did that two years ago (in 2021) on a laptop with Windows 10 and one of the driver updates through the program caused BSOD. Being I was not doing driver updates individually myself, I never could figure out which driver update in particular caused it but it took me all weekend to even get to the point where I could even reinstall the OS because Windows 10 required administrator and WiFi access. But the WiFi was knocked out so I could not sign in and verify my credentials. It's a miracle the laptop did not need professional repair. I steer clear of ever even clicking driver update on newer versions of CCleaner. In fact, after what happened I prefer using older versions now before it was a feature. I would just like to see it removed entirely after this experience. Otherwise, CCleaner is an excellent program.

May 18, 2023 Was it helpful?  yes(0) no(1) | Reply
rating Guest
Could be better, must be free for a full featured version.

Was it helpful?  yes(4) no(2) | Reply

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