Thats what it does.
Features
Program Summary:
CCleaner is a freeware PC optimization tool. That removes unused and temporary files from your system - allowing Windows to run faster, more efficiently and giving you more hard disk space. The best part is that it's Small, Fast and Free!
Cleans the following Windows components:
Internet Explorer
- Temporary File Cache.
- URL History.
- Cookies.
- Hidden Index.dat files.
- Last download file location.
Firefox
- Temporary File Cache.
- URL History.
- Cookies.
- Download manager.
Recycle Bin
Clipboard
Windows Temporary files
Windows Log files.
Recent Documents (on the Start Menu).
Run history (on the Start Menu).
Windows XP Search Assistant history.
Windows XP old Prefetch data.
Windows memory dumps after crashes.
Chkdsk file fragments.
Advanced Options allow cleaning of:
Menu Order cache
Tray Notifications Cache
Window Size and Location Cache
User Assist history
IIS Log Files
Custom Folders
Application Cleaning:
As well as cleaning up old files and settings left by standard Windows components, CCleaner also cleans temporary files and recent file lists for many applications. Including:
Firefox, Opera, Media Player, eMule, Kazaa, Google Toolbar, Netscape, Office XP, Nero, Adobe Acrobat, WinRAR, WinAce, WinZip and more...
Registry Issue Cleaning:
CCleaner uses an advanced Registry to check for problems and inconsistencies in your registry. It can check the following:
File Extensions
ActiveX Controls
ClassIDs
ProgIDs
Uninstallers
Shared DLLs
Fonts
Help File references
Application Paths
Icons
Invalid Shortcuts and more...
Safety:
CCleaner was designed from the ground to be safe and secure to use. It has multiple levels of checks in place to ensure that it cannot delete any useful information or documents you may still need. We also certify that it contains no Spyware or Adware.
High Security:
For the super cautious users we also offer secure file erasing. By overwriting the files before deleting them, making it impossible to recover the data.
Multiple Languages:
Thanks to the translators, CCleaner is available in 29 different languages:
http://www.ccleaner.com/download/