Generate Citation File Format ('CFF') Metadata
Overview
Citation File Format ('CFF') version 1.2.0 doi:10.5281/zenodo.5171937 is a human- and machine-readable file format for software citation metadata. Core utilities generate, read, write and validate Citation File Format metadata for 'R' packages.
- The JOSS paper is now linked as an external **pkgdown** article instead of being rebuilt as a package vignette.
- **cli** messages now use more precise semantic markup, pluralization and public-facing error contexts.
cff_gha_update()now usespathwhen updating.Rbuildignore.cff_read_bib_text()now rejects vectors that mix BibTeX entries with.bibfile paths.cff_write()now formats theinst/CITATIONupdate message correctly.
From NEWS.md in the release
Install
Health
- OK13 OK2026-09-29
- ERROR12 OK, 1 ERROR2026-09-25
- OK13 OK2026-08-05
- NOTE12 OK, 1 NOTE2026-08-01
- OK13 OK2026-07-19
Show 8 earlier changesHide 8 earlier changes
- ERROR12 OK, 1 ERROR2026-07-18
- OK13 OK2026-06-15
- ERROR12 OK, 1 ERROR2026-06-12
- OK13 OK2026-06-09
- ERROR12 OK, 1 ERROR2026-06-08
- OK14 OK2026-03-22
- ERROR13 OK, 1 ERROR2026-03-20
- OK14 OK2026-03-10
Documentation
- Help pages
- 23 (8 internal)includes a package overview page
- Examples that run
- 71%15 run in a plain check (2 of them under a condition) · 4 only when donttest examples are enabled (R CMD check --as-cran) · 2 never run
- Exported functions with examples
- 100%
- Documented parameters
- 99%
- Return-value docs
- 100%
- Help pages citing references
- 26% with a bibliography file
- Manipulating citations with cffr HTML
- BibTeX and CFF HTML
- From R to CFF HTML
Downloads
Repository
- PRs merged (all time)
- 88%
- Median days to close, 50 most recently updated closed issues
- 3
- Median days to close, 50 most recently updated closed PRs
- 0
Releases over time
PRs over time
Commits over time
23 development-tooling and community-health practices detected across 10 families in the upstream repository
Checks run against github.com/ropensci/cffr on 2026-10-11.
The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel
GitHub Pages site last deployed 2021-11-01
Show all practicesHide 6 practices
This repository shows signs of AI coding tools.
- GitHub Copilotfirst seen 2026-03-22Seen in the repository: .github/agents, .github/skills
- Claude Codefirst seen 2026-04-27Seen in the repository: .claudeNamed in .Rbuildignore: .claude
- Codexfirst seen 2026-07-18Seen in the repository: .codexNamed in .Rbuildignore: .codex
Dependencies
Installing cffr adds 9 packages (6 with compiled code, 5.1 MB of source tarballs). Heaviest: Rcpp 1.8 MB, jsonlite 1.0 MB, curl 714 KB.
Code & Tests
Datasets
People & History
Pick two releases to compare their code metrics.
- 1.4.2Latest
- 1.4.12026-06-17 · diff ↗
- 1.4.02026-05-04 · diff ↗
- RR 4.6.0 released · 2026-04-24
- 1.3.02026-03-13 · diff ↗
- 1.2.12026-01-12 · diff ↗
- RR 4.5.0 released · 2025-04-11
- 1.2.02025-01-25 · diff ↗
- 1.1.12024-08-16 · diff ↗
- 1.1.02024-07-23 · diff ↗
- RR 4.4.0 released · 2024-04-24
- 1.0.12024-04-09 · diff ↗
- 1.0.02024-03-12 · diff ↗ ·
added 11 exports
as_bibentry, as_cff, as_cff_person, cff_modify, cff_read_bib, cff_read_bib_text, cff_read_cff_citation, cff_read_citation, cff_read_description, cff_write_bib, cff_write_citation - 0.5.0
- RR 4.3.0 released · 2023-04-21
- 0.4.12023-01-30 · diff ↗
Show 10 earlier eventsHide 10 earlier events
- 0.4.0
- 0.3.0
- 0.2.32022-08-15 · diff ↗
- RR 4.2.0 released · 2022-04-22
- 0.2.22022-04-08 · diff ↗
- 0.2.12022-01-16 · diff ↗
- 0.2.02022-01-04 · diff ↗ ·
added 7 exports
cff_extract_to_bibtex, cff_git_hook_install, cff_git_hook_remove, cff_parse_person_bibtex, cff_to_bibtex, encoded_utf_to_latex, write_bib - 0.1.12021-11-11 · diff ↗
- 0.1.02021-11-04
- RR 4.1.0 released · 2021-05-18
Package metadata
- First published
- 2021-11-04
- Total releases
- 20 / 5 yrs
- License
- GPL (>= 3) OSI
- Minimum R
- ≥ 4.1.0
- Bundled data
- 0.9 KB / 1 file
- Download size
- 386 KB
Cite
Cite this package
Run in R for the authors' entry:
citation("cffr")The package provides a citation file, so citation() returns the authors' own entry.
It points to 10.21105/joss.03900, 10.5281/zenodo.5171937.
The repository also keeps a CITATION.cff.
Cite the R Observatory
For a number measured here: a download total, a coverage figure, an archival date.
From data release v2026-10-19, which the citation names so these numbers can be found later. More on citing and the projects behind them.