To cite package ‘jgd’ in publications use:

  McDermott G, Shima T (2026). _jgd: JSON Graphics Device_. R package
  version 0.1.0.99, <https://github.com/grantmcdermott/jgd>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {jgd: JSON Graphics Device},
    author = {Grant McDermott and Tatsuya Shima},
    year = {2026},
    note = {R package version 0.1.0.99},
    url = {https://github.com/grantmcdermott/jgd},
  }