b64_urlsafe Erlang-port of Perl module MIME::Base64::URLSafe. Build $ rebar3 compile $ rebar3 dialyzer $ rebar3 eunit How to Use 1> Msg = b64_urlsafe:encode(<<"Original Message">>). <<"T3JpZ2luYWwgTWVzc2FnZQ">> 2> b64_urlsafe:decode(Msg). <<"Original Message">> See Also https://metacpan.org/pod/MIME::Base64::URLSafe https://packagist.org/packages/yowcow/mime-base64-urlsafe