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 The software includes advanced registry cleaning features to remove unused and outdated entries, including file extensions, ActiveX controls, ClassIDs, ProgIDs, shared DLLs, fonts, help files, application paths, icons, and invalid shortcuts.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
Is CCleaner free to use?
Yes. CCleaner offers a free version with essential tools for removing temporary files, clearing browser data, and improving storage space. The Professional edition adds features such as real-time monitoring, automatic updates, health checks, and premium support.
Is this software safe to use?
Yes. It is generally safe when downloaded from the official website or another trusted source. Before removing cookies, saved logins, or browser data, review the selected items to avoid deleting information you want to keep.
Does it improve PC performance?
It can free up disk space by removing temporary files, browser caches, and other unnecessary data, which may improve responsiveness on systems with accumulated junk files. However, it does not replace hardware upgrades or resolve performance issues caused by aging hardware or insufficient RAM.
What's New in CCleaner 7.10.1464:
Release Date 2026-07-29
- Get started with Startup Manager more easily. Learn what each Startup Manager section does with a new onboarding pop-up that helps you find the right tools faster.
- Easier to read and easier to use. We made parts of the app easier to read and improved keyboard navigation, screen reader support, and chart accessibility to help more people use CCleaner with confidence.
- Improved Korean text display. Updated the Korean font styling to make text easier to read.
- Safer links and file-opening actions. Strengthened how CCleaner handles links and file-opening actions to help protect you from unsafe or unexpected behavior.
- Stronger secure app communication. Improved how parts of the app communicate behind the scenes to make key actions more secure.
- Fixed a theme-related stability issue. Fixed a problem that could cause part of the app to fail while watching for theme changes.
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.
