From KDE UserBase Wiki
      Sweeper protects your privacy on a shared computer

    Sweeper offers you two big advantages

    • It can regain disk space
    • It can remove evidence of your activities on a computer that is shared

    To do this it removes, with your agreement

    • Saved clipboard contents
    • Recent Documents
    • Recent Applications
    • Run command history
    • Your thumbnail cache

    It also cleans up your web activity, removing, if required

    • Cookies and cookie policy
    • Web history and cache
    • "Favourite" Icons
    • Form completion entries

    You can elect to remove any or all of these. You decide the balance between convenience and privacy.