pdfparanoia

pdfparanoia is a PDF watermark removal library for academic papers. Some publishers include private information like institution names, personal names, ip addresses, timestamps and other identifying information in watermarks on each page.

pdfparanoia это библиотека для удаления водяных знаков из PDF файлов научных статей. Некоторые издатели включают личную информацию, такую как названия институтов, имена, IP-адреса, время и дату и другую информацию в водяные знаки содержащиеся на каждой странице.

Installing

Simple.

sudo pip install pdfparanoia

or,

sudo python setup.py install

pdfparanoia is written for Python 2.7+ or Python 3. Dependencies are installed automatically by pip: pdfminer.six (publisher watermark plugins) and pikepdf (custom string + metadata scrubbing).

Usage

import pdfparanoia

pdf = pdfparanoia.scrub(open("nmat91417.pdf", "rb"))

with open("output.pdf", "wb") as file_handler:
    file_handler.write(pdf)

or from the shell,

pdfparanoia --verbose input.pdf -o output.pdf

and,

cat input.pdf | pdfparanoia > output.pdf

To remove a specific string from all page content streams and metadata:

pdfparanoia input.pdf -s "Downloaded by user@example.com" -o output.pdf

To remove a string from metadata only (leaving page text untouched):

pdfparanoia input.pdf -s "My Institution" --only-scrub-metadata -o output.pdf

Multiple -s flags can be combined, and matching is case-insensitive by default (pass --case-sensitive to opt out). The -o flag is safe to use with the same path as the input file.

Supported

• AIP
• IEEE
• JSTOR
• RSC
• SPIE (sort of)

Changelog

• 0.0.18 - pikepdf-based CustomStrings plugin: TJ-kerning-aware content-stream scrubbing, XMP and DocInfo metadata scrubbing, --scrub-strings / --only-scrub-metadata CLI flags, safe in-place -o output.
• 0.0.13 - RSC
• 0.0.12 - SPIE
• 0.0.11 - pdfparanoia command-line interface. Use it by either piping in pdf data, or specifying a path to a pdf in the first argv slot.
• 0.0.10 - JSTOR
• 0.0.9 - AIP: better checks for false-positives; IEEE: remove stdout garbage.
• 0.0.8 - IEEE

License

BSD.