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CCleaner remains the top tool for cleaning and optimizing Windows PCs. It enhances privacy, improves system speed, and strengthens security. With one-click cleaning, beginners can optimize their computers in seconds, while advanced users benefit from a robust set of features. Whether you’re a casual user or a tech-savvy professional, CCleaner’s efficient system optimization tools make it easier to improve your PC’s performance without upgrading your hardware.
CCleaner is a freeware system optimization and privacy tool that helps improve PC performance. It removes unused files from your system, allowing Windows to run faster and freeing up valuable hard disk space. The software also cleans traces of your online activities, including browsing history and temporary Internet files.
CCleaner is also featured in our detailed Windows security and performance tools guide, where we compare top cleanup and protection software.
The tool can run directly from a USB drive, making it portable and easy to use on multiple computers. Users can customize the cleaning process by specifying files, folders, or registry keys to exclude. This flexibility makes CCleaner a convenient system optimization tool for faster Windows performance.
One of its best features is speed. CCleaner runs in seconds, delivering quick results without slowing down your workflow. It contains no spyware or adware, ensuring a clean, safe, and reliable experience every time you use it.
CCleaner cleans the following:
- Internet Explorer. Temporary files, usage history, cookies, super cookies, autocomplete records, and index.dat components.
- Firefox. Temporary files, history, cookies, super cookies. Also, download the history and form history.
- Google Chrome. Temporary files, history, cookies, super cookies. Also, download the history and form history.
- Opera. Temporary files, history, cookies, super cookies, and download history.
- Apple Safari. Temporary files, history, cookies, super cookies, form history.
- Other Supported Browsers. K-Meleon, Rockmelt, Flock, Google Chrome Canary, Chromium, SeaMonkey, Chrome Plus, SRWare Iron, Pale Moon, Phoenix, Netscape Navigator, Avant, and Maxthon.
- Windows. Recycle Bin, recent documents, temporary files, log files, and clipboard data — along with DNS cache, error reports, memory dumps, and jump lists.
- Registry Cleaner. The software includes advanced registry cleaning features to remove unused and outdated entries, including file extensions, ActiveX controls, ClassIDs, ProgIDs, shared DLLs, fonts, help files, application paths, icons, and invalid shortcuts.
- Third-party applications. Removes temp files and recent file lists (MRUs) from many apps, including Windows Media Player, eMule, Google Toolbar, Microsoft Office, Nero, Adobe Acrobat, WinRAR, WinAce, WinZip, and many more!
CCleaner – Pros & Cons
| Pros | Cons |
|---|---|
| ✓ Removes temporary files, browser cache, cookies, and other unnecessary data to help free up disk space and reduce digital clutter. | ✗ Many advanced features, including automatic cleaning, real-time monitoring, and premium optimization tools, require the Professional edition. |
| ✓ Includes application cleaning support for many popular browsers and Windows programs, allowing users to remove leftover files from a single interface. | ✗ Registry cleaning should be used cautiously, as unnecessary changes may affect application settings without providing noticeable performance improvements. |
| ✓ Provides startup management tools that help users disable unnecessary startup applications and improve boot times. | ✗ The free version may display upgrade prompts and promotional messages encouraging users to purchase the paid version. |
| ✓ Offers health checks, software updates, and driver management features, making it a versatile PC maintenance utility. | ✗ Aggressive cleaning can remove saved browser sessions, cookies, or cached data unless exclusions are configured carefully. |
| ✓ Features a simple, user-friendly interface with one-click cleaning options suitable for beginners and experienced users. | ✗ Some optimization and update recommendations may offer only modest benefits on modern Windows systems that are already well maintained. |
Frequently Asked Questions
Can CCleaner find duplicate files?
Yes. Its Duplicate Finder can search for duplicate documents, videos, photos, and other files using criteria such as file name, size, modified date, and content. This can help identify unnecessary copies that are taking up storage space.
Can CCleaner uninstall programs completely?
Yes. The Uninstaller can remove installed applications, and recent updates have also improved the clarity of Uninstaller controls and text. This provides a convenient way to manage unwanted programs from one interface.
Does CCleaner update outdated software?
Yes, but software updating is part of the Professional features rather than the basic cleaning functionality. Health Check can identify outdated applications and help update them to address potential security weaknesses.
What is the difference between CCleaner and BleachBit?
Both can remove temporary files, browser data, and other digital clutter, but BleachBit is free and open source and places greater emphasis on secure file shredding and free-space wiping. CCleaner provides a broader PC-maintenance toolkit, including startup management, software updating, and other optimization features.
What’s New in CCleaner 7.11.1504:
Release Date 2026-08-25
- Custom Clean follows your choices. Right-click ‘Scan’ and ‘Clean’ options now run only the selected rules.
- Clearer Duplicate Finder results. When some duplicate files can’t be deleted, Duplicate Finder now shows which files were removed instead of displaying a generic error.
- Clearer Uninstaller text. We updated the wording throughout Uninstaller to make it more consistent and easier to understand.
- Smoother startup. We removed a brief flash that could appear while the app was opening.
- Improved window resizing. We fixed a white stripe at the top of the window and improved resizing from the top edge.
- Stronger security. We improved how the app protects local communication, handles files, and manages dependencies to help keep your PC and data safer.
- Arabic scan display fixed. The scan progress percentage no longer appears mirrored when you use CCleaner in Arabic.
- Tray icon setting fixed. Turning off “Show tray icon” now reliably hides the icon.
- Better accessibility. We improved screen-reader announcements
Official Homepage – https://www.ccleaner.com/ccleaner
Supported Operating Systems:
- Windows 11 (64-bit)
- Windows 10 (all editions, including 64-bit)
- Windows 8 (all editions, including 64-bit)
- Windows 7 (all editions, including 64-bit)
- Windows 2003, 2008, and 2012 Server (all editions)
- Apple Mac running 64-bit macOS 10.10 and above.
