\pdftoolbox{} offers a variety of tools for creating documents in plain \TeX. These include packages for structuring documents, coloring documents, etc. \pdftoolbox{} is a collection of packages intended to be used with plain \TeX. It is intended to be self-contained and does not promise compatibility with other packages. \bwarning \pdftoolbox{} is still experimental and may be subject to breaking changes. If you have an important document relying on it, the author advises keeping \eppbox \bwarning \pdftoolbox{} is known to not interact with the {\tt color}, {\tt xcolor}, {\tt tikz} and all related packages. This may or may not be changed in the future. \eppbox This documentation is split into sections corresponding to the different collections in \pdftoolbox. These are: \benum \item Data manipulation: counters, dictionaries, etc. \item Document structure: layouts, table of contents, indices, etc. \item Graphics: colors, diagrams, colored boxes, etc. \eenum \pdftoolbox{} depends only on the \url{https://ctan.org/pkg/apnum?lang=en}{apnum} package. \pdftoolbox{} is provided as opensource free software under the MIT license.