Custom 'Bootstrap' 'Sass' Themes for 'shiny' and 'rmarkdown' R package bslib version 0.12.0 Simplifies custom 'CSS' styling of both 'shiny' and 'rmarkdown' via 'Bootstrap' 'Sass'. Supports 'Bootstrap' 3, 4 and 5 as well as their various 'Bootswatch' themes. An interactive widget is also provided for previewing themes in real time. Software Depends: R (>= 2.10) Imports: base64enc, cachem, fastmap (>= 1.1.1), grDevices, htmltools (>= 0.5.8), jquerylib (>= 0.1.3), jsonlite, lifecycle, memoise (>= 2.0.1), mime, rlang, sass (>= 0.4.9) Suggests: brand.yml, bsicons, curl, fontawesome, future, ggplot2, knitr, lattice, magrittr, rappdirs, rmarkdown (>= 2.7), shiny (>= 1.11.1.9000), testthat, thematic, tools, utils, withr, yaml Carson Sievert <carson@posit.co> Comprehensive R Archive Network (CRAN) Carson Sievert [aut, cre] (ORCID: <https://orcid.org/0000-0002-4958-2844>), Joe Cheng [aut], Garrick Aden-Buie [aut] (ORCID: <https://orcid.org/0000-0002-7111-0077>), Posit Software, PBC [cph, fnd], Bootstrap contributors [ctb] (Bootstrap library), Twitter, Inc [cph] (Bootstrap library), Javi Aguilar [ctb, cph] (Bootstrap colorpicker library), Thomas Park [ctb, cph] (Bootswatch library), PayPal [ctb, cph] (Bootstrap accessibility plugin) MIT + file LICENSE (https://CRAN.R-project.org/package=bslib/LICENSE) 2026-08-04 application/tgz https://CRAN.R-project.org/package=bslib doi:10.32614/CRAN.package.bslib