[R-pkg-devel] Resize PDF Vignettes in Source Package

Duncan Murdoch murdoch.duncan at gmail.com
Wed Jan 10 14:56:39 CET 2018

On 10/01/2018 2:08 AM, Marius PASCARIU wrote:
> Dear all,
> I want to add PDF vignettes to my package created with rmarkdown. The PDFs are generated without problems. If I submit the package to CRAN I would a warning telling me that the files are too large (see below):
> checking sizes of PDF files under 'inst/doc' ... WARNING
>   'gs+qpdf' made some significant size reductions:
>      compacted 'Manual.pdf' from 370Kb to 116Kb
>   consider running tools::compactPDF(gs_quality = "ebook") on these files
> I do run `tools::compactPDF(gs_quality = "ebook�)` and the size of the PDF is indeed reduced to 116Kb. Now, if I build again the source package using `R CMD build <package_name>` the vignette is reconstructed at its original size (370Kb). However, If I build the package using `R CMD build <package_name> --no-build-vignettes` in order to keep the small PDF, the check would throw me the following NOTE:
> Package has a VignetteBuilder field but no prebuilt vignette index.
> Any ideas how can I include the compacted PDFs in the souce package and have a vignette index in the same time?

When you build the tarball, use the --compact-vignettes option.

Duncan Murdoch

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