Unicode utilities (UTF-8 converter) using JavaScript

• This shows Unicode code point of the input.
   => 
• This encodes the input (accepts \uxxxx) to UTF-8.
   => 
• This decodes the UTF-8 input
  (comma or space separated hex numbers, e.g. c3a1,e38182)
  to Unicode code points and actual characters.
  
   =>   => 
• Base 64 decoder