A-NO-NE File Name Converter

This utility is to help cross-platform-safe file name, no space, no illegal character, no period except extension prefix. If the number of character exceed 31, you need to shorten manually, however. Example: 'I am a boy, but you are a girl.gif' becomes 'I_AmA_BoyButYouAreA_Girl.gif'
Paste File Name String

White space removed
Number of characters	Before: characters	After: characters