FilenameToFTP renames files and folders for a next-coming FTP-upload that way, that it replaces invalid characters with an underscore "_". German special character as ä, ö, ü, ß will be replaced with "ae", "oe", "ue" and "ss". The filename will be lowercased and the file gets the current date, so it`s easier to differ from earlier uploaded files.
On unix-based internet-servers it makes a big difference, whether the characters of a filename is lower- or uppercase. If you upload a program as "FilenameToFTP.Zip" on a FTP-server for example, but you point in a link to "filenametoftp.zip", so the programm won`t be found by a browser online, even though at your local system all seems to be alright, because your windows-system will match the right name automatically, which is not the case in the internet. The same effect will occur with special characters as the german umlauts.
Safe characters are a-z, 0-9 and the underscore. FilenameToFTP does the job for you, to rename the file, so you can safely upload it to a ftp-server and later have no problem, they will be found, same as on your local system. For that, you should use FilenameToFTP every time, before you upload a file to your server. In addition the program sets the file-date to the current one (so it looks like you have edited it just today the last time), so it`s easier to you to differ from earlier uploaded files and to find out, what file you have to upload, when you search them with your window-find-function with date-option.