Small Cell Masking Tool for One- & Two-Way Tabular Reports R package countmaskr version 0.1.1 Provides automated small-cell suppression for one- and two-way frequency tables. Cells falling below a user-defined frequency threshold are masked, with suppression propagated to secondary cells to prevent indirect disclosure. Designed for clinical and health administrative data, the package supports a range of tabular structures and fits into reproducible reporting pipelines, reducing manual review while applying consistent suppression rules across data sharing workflows. Software Depends: R (>= 2.10), dplyr, tibble, tidyr Imports: lifecycle Suggests: knitr, rmarkdown, testthat (>= 3.0.0) Sahal Master <sahalmaster@outlook.com> Comprehensive R Archive Network (CRAN) Sahal Master [cre, aut] (ORCID: <https://orcid.org/0000-0002-8518-8107>), Amy Goodwin Davies [aut] (ORCID: <https://orcid.org/0000-0002-2942-4654>), Allison Zelinski [aut], Qiwei Shen [aut] (ORCID: <https://orcid.org/0009-0003-0631-0026>), Charles Bailey [aut] (ORCID: <https://orcid.org/0000-0002-8967-0662>), Nicole Marchesani [ctb] (ORCID: <https://orcid.org/0009-0006-0683-7575>), Aqsa Khan [ctb] (ORCID: <https://orcid.org/0009-0000-9574-4704>), Rhonda DeCook [ctb] MPL-2.0 2026-04-10 application/tgz https://CRAN.R-project.org/package=countmaskr doi:10.32614/CRAN.package.countmaskr