pdfcombiner: Launches PDF Combiner

In pdfcombiner: Graphical User Interface for Manipulating PDF and Image Files

Launches PDF Combiner

Description

Launches the PDF Combiner shiny App. Instructions on usage are included on the left hand side of the page. By default it uses the bootstrap theme, allowing minimization of the sidebar. Set argument boostrap_theme = FALSE to turn this off.

Usage

pdfcombiner(
  max_file_size = 500,
  bootstrap_theme = TRUE,
  sidebar_width = 700,
  defaultwm_fontsize = 50,
  defaultwm_col = "gray80",
  defaultwm_alpha = 0.6,
  defaultwm_rot = 45,
  defaultwm_fontface = "bold",
  defaultwm_height = 11,
  defaultwm_width = 8.5,
  image_dpi = 300,
  compact_level = "ebook",
  linearize = FALSE,
  verbose = TRUE
)

Arguments

max_file_size	Max upload file size in MB, change if needed
bootstrap_theme	When TRUE, uses bslib bootstrap theme to allow minimizing sidebar
sidebar_width	Only applicable when bootstrap theme is used, in pixels
defaultwm_fontsize	Default Watermark font size
defaultwm_col	Default Watermark color
defaultwm_alpha	Default Watermark alpha
defaultwm_rot	Default Watermark rotation angle
defaultwm_fontface	Default Watermark fontface (one of "plain", "italic", "bold", "bold.italic")
defaultwm_height	Default Watermark height in inches (US letter size = 11, A4 = 11.69)
defaultwm_width	Default Watermark width in inches (US letter size = 8.5, A4 = 8.27)
image_dpi	Dots per inch for use when converting to images
compact_level	One of "none" (not used), "printer" (300dpi), "ebook" (150dpi), "screen" (72dpi), only applicable if Ghostscript is installed
linearize	Default FALSE. When TRUE, optimizes PDF for web-viewing (loads first page quickly)
verbose	Prints out working messages in console

Details

The user is highly recommended to also install the staplr package as it supports bookmarks, however it uses Java so you may need to install Java separately if your system does not currently have it. In addition, the magick package is recommended for supporting uploading of image files.

Value

a Shiny App

Note

All PDF files are stored locally in a per-session temporary directory, given by the tempdir() function.

See Also

https://github.com/stevechoy/pdfcombiner, pdftools, qpdf

Examples

if (interactive()) {
pdfcombiner(bootstrap_theme = FALSE) # Do not use bootstrap theme (if `shiny` version is < 1.7.4)
}

pdfcombiner documentation built on Sept. 9, 2025, 5:56 p.m.