CCleaner Professional is the most powerful version of Piriform's celebrated Windows PC cleaner. It makes it easy to speed up a slow computer and keep your activity private — automatically and in the background. Trusted by millions and critically acclaimed, there’s a reason why CCleaner Pro is the world’s favorite PC optimization tool! Easy to use, one-click cleaning so beginners can optimize their computers in seconds. Plus, it's packed with advanced features for power users. Faster Computer Privacy Protection Real-time Monitoring Scheduled Cleaning Automatic Updates Premium Support These are some of the features you get with CCleaner Pro: Automatic Updates Windows and browsers constantly evolve. CCleaner Pro updates once a month to stay on top! Outdated apps are a security risk. Old software can have vulnerabilities, which are quickly discovered and shared amongst cybercriminals. CCleaner updates your software automatically to close security holes before they can be found. Faster Computer Is your computer running slow? As it gets older it collects unused files and settings which take up hard drive space making it slower and slower. It cleans up these files and makes it faster instantly. Safer Browsing Advertisers and websites track your behavior online with cookies that stay on your computer. It erases your web browser search history and cookies so any internet browsing you do stays confidential and your identity remains anonymous. Automatic Cleaning Regularly cleans junk files to keep your computer running smoothly. Automatic Privacy Protection Clears history and cookies when you're not using your web browser. Fewer Errors