UndoPDF Excel Password Remover provides three effective methods to help users remove Excel passwords which are forgotten or lost, enabling them to reuse the contents of the password protected Excel files. For most of users, they use a word or a combination of words to be a password; this is why the dictionary attack is provided by UndoPDF Excel Password Remover. Sometime, although users cannot remember what the exact passwords are, they can remember some information about the passwords such as the password length; this is why the brute-force with mask attack is provided to narrow down the searching area. In case some users cannot remember anything about the lost passwords yet want to remove Excel Passwords, the brute-force with mask attack (trying all possible combination) is provided.