Read: a to b to a
atob
and btoa
utilities to convert base64 encoded ASCII text to binary and vice versa.
http://www.sunshine2k.de/articles/coding/base64/understanding_base64.html
The tool has been written in Janet which outputs small executables that are fast to start up.
janet ./atob "aGVsbG8="
janet ./btoa "hello"
jpm build
jpm test
jpm run testw # run tests in watch mode