To cite package ‘RFPNG’ in publications use:

Schoch D (2023). RFPNG: Very Fast PNG Image Reader/Writer for 24/32bpp Images. R package version 0.0.0.9000, https://github.com/schochastics/rfpng.

Corresponding BibTeX entry:

  @Manual{,
    title = {RFPNG: Very Fast PNG Image Reader/Writer for 24/32bpp
      Images},
    author = {David Schoch},
    year = {2023},
    note = {R package version 0.0.0.9000},
    url = {https://github.com/schochastics/rfpng},
  }