A computer implemented method, computer program product, and computer system for viewing content encoded in at least one code set and stored in a file system. A computer identifies a unified code set covering all characters used in the file system. The computer, responsive to a user input to view the content, determines whether the content is wholly encoded in the unified code set. The computer, responsive to determining that the code set is not wholly encoded in the unified code set, converts encoding of the content to the unified code set to form converted content. The computer displays the converted content.