• Base 64 decoder in JavaScript.
  
  <= base 64 string (e.g. "44OG44K544OI44Oh44O844Or")
  <= decoded string in hex (e.g. "E38386E382B9E38388E383A1E383BCE383AB")
  
  Note: if the decoded string is JIS, it begins with escape sequence like "1B2442" (that is "ESC$B"), so the actual JIS code starts from 4th byte
• UTF-8 converter
• JIS to Shift_JIS converter