As a user, once I have selected a font and reviewed the sample text, I want to convert the entire document's encoding from ASCII to Unicode. This conversion should preserve the selected formatting, ensuring that the document's appearance is maintained in the target encoding.

Once completed, I expect to download the converted document in its original (or a compatible) file format, now encoded in Unicode and adjusted to the selected font, ready for my use.

Dependent issue - #9

Epic - #7