![]() ![]() It was guided to a great degree by the PDF-related issues I’ve encountered myself in my day to day work. View, search and extract low-level PDF objectsĮven though this post covers a lot of ground, the selection of tasks and tools presented here is by no means meant to be exhaustive.File size reduction of PDF with hi-res graphics.Inspection of embedded image information.Document information and metadata extraction.Starting with a brief overview of some general-purpose PDF toolkits, I then move on to a discussion of the following specific tasks: It is largely based on a multitude of scattered lists, cheat-sheets and working notes that I made earlier. ![]() This post is an attempt to (finally) bring together my go-to PDF analysis and processing tools and commands for a variety of common tasks in one single place. Over the years, I’ve been using a variety of open-source software tools for solving all sorts of issues with PDF documents. Retrieved 3 October 2018.Plumbers Tool Box by pszz on Flickr. ^ Albert Astals Cid (8 February 2008).^ "Bug 25240 – Cairo backend for Qt4 wrapper".^ PDF v1.7 asks to upgrade Adobe Reader, 27 January 2009.^ a b Bug 18935 - Form data is not saved for PDF files using XFA forms, will show old values when opened in acroread / Adobe Reader, 7 December 2008.Archived from the original on 8 July 2012. ^ a b c "GNU PDF project leaves FSF High Priority Projects list mission complete!".It is useful for searching for strings in PDFs from the command line, using the utility grep, for instance. Poppler comes with a text-rendering back-end as well, which can be invoked from the command line utility pdftotext. Splash: Supports minification filtering of bitmaps.Cairo does not depend on the X Window System, so Poppler can run on other platforms like Wayland, Windows or macOS.Cairo does not smooth bitmap images such as scanned documents.Cairo: Anti-aliasing of vector graphics, and transparent objects.Some characteristics of the back-ends include: There is a patchset available to add support for the Cairo backend to the Qt5 bindings, but the Poppler project does not currently wish to integrate the feature into the library proper. Bindings exist for Glib and Qt5, that provide interfaces to the Poppler backends, although the Qt5 bindings support only the Splash and Arthur backends. A third back-end based on Qt4's painting framework "Arthur", is available, but is incomplete and no longer under active development. Its features may depend on which back-end it employs. Poppler can use two back-ends for drawing PDF documents, Cairo and Splash. Notable free software applications using Poppler to render PDF documents include: Application The name Poppler comes from the animated series Futurama episode " The Problem with Popplers." Poppler is a fork of Xpdf-3.0, a PDF file viewer developed by Derek Noonburg of Glyph and Cog, LLC. The project was started by Kristian Høgsberg with two goals: to provide PDF rendering functionality as a shared library, to centralize maintenance effort and to go beyond the goals of Xpdf, and to integrate with functionality provided by modern operating systems.Īs of the version 0.18 release in 2011, the poppler library represents a complete implementation of ISO 32000-1, the PDF format standard, and is the first major free PDF library to support its forms (only Acroforms but not full XFA forms ) and annotations features. It is commonly used on Linux systems, and is used by the PDF viewers of the open source GNOME and KDE desktop environments. Poppler is a free software utility library for rendering Portable Document Format (PDF) documents. ![]()
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