Manipulating PDF documents

Command line tools

PDF

• pdftk - a simple tool for doing everyday things with PDF documents
• pdfrecycle - creates a PDF file by composing pages from other PDF files
• mbtPdfAsm - a in line tool for assembling/merging pdf files, extract informations form PDF files, update PDF files metadata
• pdfgrep - a tool to search text in PDF files
• pdfcrop - a tool to crop the pages of PDF files
• poppler-utils - command line utilities (based on Poppler) for getting information of PDF documents, convert them to other formats, or manipulate them

Converter

• pdftohtml - an utility which converts PDF files into HTML and XML formats
• pdfreflow - reflows the texts into paragraphs, while removing hyphenation and page numbers, headers and footers
• pdf2xml - converts information contained in a PDF file into XML
• epub2pdf - a command-line tool that quickly generates PDF files from EPUB ebooks
• pdf2djvu - creates DjVu files from PDF files

PS

• Ghostscript - an interpreter for the PostScript language and for PDF

Scripts

• Compress PDF - a nice Nautilus script with a GUI to compress and optimize PDF files
• PDFjam - a small collection of shell scripts for pdfpages

HowTo

• How To Extract All Text From PDFs
• PDF Data Extraction In Linux
• Howto reduce PDF file size from command line

GUI tools

• PDF Mod - a simple application for modifying PDF documents
• PDF-Shuffler - a frontend for python-pyPdf
• PDF Split and Merge - A free open source tool to split and merge pdf documents
• Moonshiner - a graphical frontend (GUI) for Ghostscript's PostScript-to-PDF converter
• DiffPDF - compares two PDF files
• GUI for PDFTK - a GUI for the PDFTK
• PdfTk-QGUI - a Qt 4.x GUI for pdftk

MS Windows

• PDFTK Builder - a free graphical interface to the Windows version of PDFTK
• pdftk4all - a GUI to pdftk

MacOS-X

• PDF-Images - a tool for Mac OS X that extracts images from PDF files

Development libraries

C and C++

• PoDoFo - a library to work with the PDF file format
• libHaru - a free, cross platform, open source library for generating PDF files
• Poppler project - a PDF rendering library based on the xpdf-3.0 code base

Organisations

• PDF Association
• PDFreaders.org - Get a Free Software PDF reader!

PDF Chain

• https://apps.ubuntu.com/cat/applications/pdfchain/ - at the Ubuntu Software Centre
• https://launchpad.net/ubuntu/+source/pdfchain/ - at Launchpad (by Johann Felix Soden)
• https://launchpad.net/pdfchain/ - at Launchpad (old version at my repository)
• https://www.ohloh.net/p/pdfchain/ - at ohloh
• http://linuxappfinder.com/package/pdfchain/ - at Linux App Finder