Thread:KockaAdmiralac/@comment-31984232-20180612141733/@comment-27345308-20180701212739

In hexadecimal it doesn't matter, A, B, C, D, E and F are letters brought into the system because there were no other characters to represent digits for what would in decimal system be 10, 11, 12, 13, 14 and 15. In Base64 it does matter, as shown when you capitalize any character of a base64-encoded string. For example,  in Base64 is   but   decodes to   instead.