A new R package, cffr, has been developed, peer-reviewed by rOpenSci and accepted by CRAN. This package has a single purpose: to create a valid CITATION.cff file using the metadata of any R package. CITATION.cff files and why they matter A Citation File Format (CFF) is a plain text file with human- and machine-readable citation information for software (and datasets)1. Under the hood, a CFF file is a YAML …