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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, letting Windows 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.
We also feature CCleaner 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, and 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 The software includes advanced registry cleaning features to remove unused and outdated entries, including file extensions, ActiveX controls, ClassIDs, ProgIDs, shared DLLs, fonts, help files, application paths, icons, and invalid shortcuts.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
Is CCleaner free to use?
Yes. CCleaner is available as freeware for basic PC cleaning and optimization, with a Professional edition that adds advanced features such as automatic cleaning, real-time monitoring, and other premium tools.
What is CCleaner used for?
It is used to clean unnecessary files and privacy traces from Windows PCs, including temporary data, browser history, cookies, cache, and various application leftovers. It also provides tools for startup management, software updates, health checks, and other PC maintenance tasks.
Where can I download CCleaner?
You can download CCleaner from the download section provided on Softfully.com, which links directly to the developer’s official download files. The page provides free, Professional, Business, portable, Mac, and Android downloads.
What is the difference between CCleaner and Advanced SystemCare?
Both provide PC cleaning and optimization tools, including junk-file removal, startup management, and system-performance features. Advanced SystemCare also combines these functions with tools such as automatic RAM optimization, real-time protection, browser protection, and internet optimization, giving it a broader collection of maintenance and security functions.
What’s New in CCleaner 7.12.1526:
Release Date 2026-09-29
Expanding our cleaning
- New AI Tools category in Custom Clean: We’ve added a new AI Tools category to Custom Clean. You can now find, analyze, and clean junk files from popular AI apps, including ChatGPT, Claude, Cursor, Codex, Antigravity, Gemini, and LM Studio.
Keeping you safe
- Improved file-write security. We’ve fixed a security issue found during an internal audit that could have allowed unauthorized file writes under certain conditions.
- Fixed a crash that stopped the app service from starting. Resolved a startup crash caused by an internal lookup error that affected over 1,000 users.
- Better handling of browser runtime updates: the app now properly detects when the Edge WebView2 runtime has been updated or removed, preventing crashes when opening in-app content.
- Smoother app shutdown: We’ve fixed a timing issue during shutdown that could cause a crash when background tasks were still running.
Fixing bugs
- Installer now verifies WebView2 before launch. The installer checks that the WebView2 runtime is actually present on disk, not just registered, and re-installs it if needed. This prevents launch failures some users experienced after installation.
- Fixed an error when updating CCleaner. Resolved an issue where some users saw a 0x404 error during the update process.
- Faster app launch and no more duplicate windows: CCleaner now opens roughly 3–6× faster. Launching the app while it’s already running correctly brings the existing window to the front instead of opening a second one.
- Performance Optimizer no longer mislabels programs. Fixed an issue where the WSL Service was incorrectly shown as “Microsoft GameInput” in Performance Optimizer.
- Startup Manager shows the correct program names again. Fixed an issue introduced in 7.09 where Startup Manager displayed wrong names for several common programs.
- Your chosen landing page is now respected. The app now opens to the page you’ve set in Settings, instead of always defaulting to Health Check.
- Health Check browser checkboxes work properly. Clicking a browser name in the “Close browsers” dialog now correctly toggles its checkbox.
- Fixed positioning of in-app messages. Onboarding and upsell messages now display correctly over the app window.
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.
