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CCleaner System Optimizer And Cleaner Software Download 5.66

Feb 8,2019 - Piriform CCleaner (Free)

24.1 MB (Safe & Secure)

CCleaner is an easy-to-use, lightweight, safe, and effective drive cleanup utility popular for computers running Microsoft Windows that cleans out the ‘junk’ that accumulates over time: including a conservative registry cleaner, Pc health checkup, startup manager, temporary files, broken shortcuts, and other problems.

CCleaner includes a  system analysis that can find its way on your computer in order to find all kinds of unnecessary files such as temporary internet files, obsolete registry keys, badly done installations, cookies, or other remaining files on your browser, among many other things.

CCleaner removes cookies, temporary files, and various other unused data that is in your operating system. This frees up hard disk space, allows your system to run faster. Removing this data also protects your anonymity, which means you can browse online more securely. The built-in Registry Cleaner fixes errors and broken settings to make your computer more stable. The simple, new UI and rapid but powerful cleaning make this software a favorite among techies alike.

CCleaner Download For PC

Also available CCleaner alternative, Intel Extreme Tuning Utility for system monitoring.

CCleaner Pro

If someone has better utility with pro uses, there is CCleaner Professional for them, in this, the tool will regularly clean junk files to keep your computer running smoothly, also Clears history and cookies when you’re not using your web browser. All this makes it easy to speed up a slow computer and keep your activity private — automatically and in the background. Click here to download the CCleaner Pro trial pack.

Comparison Chart (Free Version and CCleaner Professional)

CCleaner Free CCleaner Pro  CCleaner Pro Up to 3 Pc
New: PC Health Check: Automatically analyzes, fixes, and tunes your PC’s performance Yes Yes Yes
Faster Computer: Control which apps use your computer’s resources Yes Yes Yes
Privacy Protection: Removes tracking files and browsing data Yes Yes Yes
Software Updater: Quickly updates apps to reduce security vulnerabilities No Yes Yes
Cleans Everywhere: Even places other cleaners can’t reach No Yes Yes
Guards Against Junk Files: Monitors junk in real-time No Yes Yes
Automatically Clears History: Cleans your browser when you close it No Yes Yes
Always Up-to-date: CCleaner keeps up with your browsers and operating system Manual Yes Yes
Faster, Longer-lasting Hard Drives: Includes Defraggler, to keep hard disks healthy and running efficiently Yes
File Recovery: Includes Recuva, so you never have to worry about losing a file again Yes
See Inside your PC: Includes Speccy, so you can spot issues or find compatible upgrades Yes
Free Download Buy Now Buy Now

CCleaner Download For Mac


Features of CCleaner

  • PC Health Check

CCleaner’s new Health Check analyzes your PC and recommends quick fixes, then automatically tunes and updates it so it starts and runs faster, and is more secure.

  • 1-Click Updates All Your Software

The Outdated apps that stayed in your system are a big security risk and you should remove it before any catastrophe. Old software can have vulnerabilities because they aren’t enough capable to face the new cyber threats, which are quickly discovered and shared amongst cybercriminals. CCleaner automatically updates your software to close security holes before they can be found.

  • Speeding computer

More your system filled with unwanted junk or non-productive files, the more you will face the lack of speed on the pc. CCleaner removes unused files and settings to free up valuable hard drive space, enabling your system to run faster. The default settings only focus on typical junk files and locations so you’re unlikely to lose important information unless you alter these.

  • Fewer crashes & system error

CCleaner’s fully featured Registry Cleaner identifies these issues and fixes them. The registry analysis takes seconds and cleaning just a little bit longer. Prompts advise you when to save backups to avoid losing important data.

  • Secure browsing

Your pc is at high risk by having saved passwords, cached data, and internet histories to make your identity less secure. CCleaner removes these files to make your browsing confidential, meaning you are less likely to suffer from identity theft or online fraud.

  • Customize clean

These software tools and Options tabs allow you to customize cleaning options to fit your needs. If you are not a user, you might want to stick with the safe default settings. Advanced users can uninstall unwanted programs, select which cookies save, customized cleaning settings, and set up system monitoring.

  • Quicker Startup

Many programs run silently in the background when you start up your computer. CCleaner helps you get to work or play faster by letting you disable unneeded programs.

Screenshots of CCleaner

Official Video Intro CCleaner

How to Download, Install and Use Ccleaner ( to clean potentially unwanted files )

CCleaner For PC Clean up Software FAQ

What operating systems does CCleaner support?

CCleaner is fully tested and compatible with all the latest Windows OSs.

This includes both 32-bit and 64-bit versions of:

  • Windows 10
  • Windows 8
  • Windows 7


Do I need to uninstall the old version of CCleaner when upgrading?

No, you can install newer versions over the top of older versions, without having to uninstall.

If you do uninstall an old version first, you will lose your existing settings.


Does It Clean All The User Accounts On The Computer?

At the moment CCleaner supports cleaning the current user’s account only.


How do I restore registry backups?

Right-click on the .REG file created and select ‘Merge’.
By default these files will be saved into your ‘My Documents’ folder.


Why Are My Custom Files And Folders Are Not Being Cleaned?

Once you’ve selected the Custom Files and Folders to be cleaned in the Options screen, you need to enable it by selecting the “Custom Files and Folders” option under the Windows Tab -> Advanced.


CCleaner Older Versions

Version Name Size Download
ccsetup566 24.1 MB Download

CCleaner Overview

CCleaner Software For PC

CCleaner Software Download

Technical Specification

Software Name CCleaner
Version 5.66
File Size 24.1 MB
License Free Trial
Developer Piriform CCleaner


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