Base64, but no UPPER CASE.

It is useful in case-insensitive scenarios, such as Scratch.

!#$%&()*,-.:;<>?@[]^_`{|}~abcdefghijklmnopqrstuvwxyz0123456789+/

For Scratch:
https://scratch.mit.edu/projects/1263900629/

For Python:
https://pypi.org/project/base64-no-upper-case/

Setup

npm

npm i base64-no-upper-case

import base64NoUpperCase from "base64-no-upper-case"

// Encode string
var enc = base64NoUpperCase.encode("Hello world!")
console.log(enc)

// Decode to string
var dec = base64NoUpperCase.decodeToString("])`sb)8gd29yb)@h")
console.log(dec)

// Encode Uint8Array
var enc = base64NoUpperCase.encode(new Uint8Array(16))
console.log(enc)

// Decode to Uint8Array
var dec = base64NoUpperCase.decode("^2rn8;ffl7<z*}{.|m@|{w==")
console.log(dec)