qpdf (version 1.0)

qpdf: Split, Combine and Compress PDF Files

Description

Content-preserving transformations transformations of PDF files. Note qpdf does not read actual content from PDF files: to extract text and data you need the pdftools package.

Usage

pdf_split(input, output = NULL, password = "")
pdf_length(input, password = "")
pdf_subset(input, pages = 1, output = NULL, password = "")
pdf_combine(input, output = NULL, password = "")
pdf_compress(input, output = NULL, linearize = FALSE, password = "")

Arguments

input

path or url to the input pdf file

output

base path of the output file(s)

password

string with password to open pdf file

pages

a vector with page numbers so select. Negative numbers means removing those pages (same as R indexing)

linearize

enable pdf linearization (streamable pdf)

Details

Currently the package provides the following wrappers:

• pdf_length: show the number of pages in a pdf

• pdf_split: split a single pdf into separate files, one for each page

• pdf_subset: create a new pdf with a subset of the input pages

• pdf_combine: join several pdf files into one

• pdf_compress: compress or linearize a pdf file

These functions to not modify the input file: they create new output file(s) and return the path(s) to these newly created files.

Examples

# NOT RUN {
# extract some pages
pdf_file <- file.path(tempdir(), "output.pdf")
pdf_subset('https://cran.r-project.org/doc/manuals/r-release/R-intro.pdf',
  pages = 1:3, output = pdf_file)
pdf_length(pdf_file)
unlink(pdf_file)
# }