A developer-friendly API for converting numerous document formats into PDF files, and more!

A Python library for reading and writing PDF, powered by QPDF

Simply remove known password from multiple pdf (python or powershell)

Simple Go bindings for qpdf C / C++ API; mostly for linearization.

A transient Emacs wrapper for qpdf

qpdf binary for our alpine images

Docker image for QPDF

GitHub Action that installs qpdf, for PDF files processing in command-line

Scripts to reorder PDFs for easier multiple page/sheet printing and cutting.

Up-to-date qpdf binary buildpack for heroku.

A PDF manipulation library based on QPDF

PDF Mix Tool is a simple and lightweight application that allows you to perform common editing operations on PDF files.

Remove annotations from PDF files.

Python (2.7) algorithm to extract data from locked PDF files using the package bsp4;

A tool for removing PDF protection restrictions.

Shell Script Redact PDF using open source softwares

PHP library to work with QPDF: https://github.com/qpdf/qpdf

PHP class for access QPDF C Interface

Converting digital PDFs to simulated scanned PDFs.

Command-line, quality-first PDF optimizer. Drop PDFs into input/, get optimized results in output/. Ghostscript + qpdf with optional PSNR quality gate and a never-worse guarantee.