Fast and URL-Safe Base64 Encoder and Decoder R package base64url version 1.4 In contrast to RFC3548, the 62nd character ("+") is replaced with "-", the 63rd character ("/") is replaced with "_". Furthermore, the encoder does not fill the string with trailing "=". The resulting encoded strings comply to the regular expression pattern "[A-Za-z0-9_-]" and thus are safe to use in URLs or for file names. The package also comes with a simple base32 encoder/decoder suited for case insensitive file systems. Software Imports: backports (>= 1.1.0) Suggests: base64enc, checkmate, knitr, microbenchmark, openssl, rmarkdown, testthat Michel Lang <michellang@gmail.com> Comprehensive R Archive Network (CRAN) Michel Lang [cre, aut] (ORCID: <https://orcid.org/0000-0001-9754-0393>), Apache Foundation [ctb, cph], Free Software Foundation [ctb, cph] GPL-3 2018-05-14 application/tgz https://CRAN.R-project.org/package=base64url doi:10.32614/CRAN.package.base64url