Invisible-characternet provides a service specializing in the use of invisible characters, such as blank spaces, non-breaking spaces, and other Unicode characters that do not display visibly in text. These invisible characters can be used for a variety of purposes including creating whitespace in text, circumventing character restrictions, or inserting invisible text for formatting or coding purposes. The website likely offers tools or generators to easily create and copy these characters for users who need them for their digital content.