[MrBuddyCasino]

We have a similar problem at work right now, but due to different constraints we've settled on Base85. Slightly denser than Base64, but still just plain old printable ASCII characters and the following characters are still "free" so one can use them as field delimiters in a CSV-style format:

    "',/[]\

Incidentally, this also makes them JSON-Safe.

Base94 uses all printable characters, and Base122 uses both printable characters and whitespace.

UUIDs encoded in various alphabets:

    len     algo               value
    24 Base64 padded   wScmB8cVS/K05Wk+nORR8Q==
    22 Base64 unpadded osnQ3DUDTDuUQBc9mBRYFw
    20 Base85          rHoLuTk%W0fgpY+`c>xc 
    20 Base94          d(+H"Q/hP}i}d9<KeAt)%
    18 Base122         @#FoALt`92vSt@

[Zamicol]

I'm not following as Base85 isn't JSON safe. For example, { and } carry meaning in JSON.

[MrBuddyCasino]

I should have specified what I meant by that - if you put "'\ in json strings you have to escape them.