R: Split, Combine and Compress PDF Files

qpdf {qpdf} | R Documentation

## 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

    # 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)

[Package qpdf version 1.1 Index]