R bindings for the qpdf C++ library, exposing content-preserving PDF transformations from R: splitting, combining/merging, and compressing PDF files (e.g. `pdf_compress()`). Does not read PDF content itself — the maintainers point to the 'pdftools' R package for text/data extraction.
RrOpenSci package for searching and retrieving full-text academic articles across open-access and subscription journals: Crossref metadata lookup, PDF text extraction, academic-document XML parsing, and text mining.
R bindings for extracting content from PDFs: `pdf_text()` for per-page text, `pdf_info()` for metadata (author, creation date, tags), `pdf_toc()` for table of contents/section headers, `pdf_fonts()` for font info, embedded-attachment access, and `pdf_render_page()` to rasterize pages to bitmap (e.g. PNG/WEBP). Does not handle table extraction (recommends the `tabulizer`/`tabulapdf` package) or OCR of scanned text (recommends the `tesseract` package).
RR bindings to the Tabula Java library (an R clone of the Tabula CLI) that computationally extracts tables from PDF documents via `extract_tables()`, returning results as R tibbles/data frames. Requires a Java runtime (rJava, OpenJDK 11 recommended).