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Document-level metadata for a PDF

Source: R/document.R
pdf_doc_info.Rd

Returns the page count, the PDF file version, every standard Info-dictionary entry, and POSIXct parses of the two date fields. The shape mirrors pdftools::pdf_info() to ease porting.

Usage

pdf_doc_info(doc, password = NULL)

Arguments

doc

A pdfium_doc from pdf_doc_open(), or a character path.

password

Optional password for encrypted PDFs when doc is a path. Ignored when doc is already an open pdfium_doc.

Value

A list with elements:

  • page_count - integer

  • file_version - integer; PDFium reports 10 * major + minor (e.g. 17 for PDF 1.7)

  • title, author, subject, keywords, creator, producer, creation_date, mod_date, trapped - character

  • creation_date_parsed, mod_date_parsed - POSIXct (UTC), NA when the source date is empty or unparseable

Details

Standard Info-dictionary entries are UTF-8 strings; missing entries appear as "". Date strings come back in the PDF format "D:YYYYMMDDHHmmSS+HH'mm'" and are also parsed into POSIXct (UTC) in the creation_date_parsed and mod_date_parsed slots; parses that fail return NA.

See also

pdf_doc_meta() for arbitrary tag access, pdf_parse_date() for the date-parser used internally.

Examples

fixture <- system.file("extdata", "fixtures", "shapes.pdf",
  package = "pdfium"
)
if (nzchar(fixture)) {
  info <- pdf_doc_info(fixture)
  info$page_count
  info$producer
  info$creation_date_parsed
}
#> [1] "2026-05-15 19:12:28 UTC"