Open Source C++ PDF Editors

Converseen is a free cross-platform batch image processor for Windows, Linux, macOS, FreeBSD, and other operating systems. It allows you to convert, resize, rotate, and flip an infinite number of images with a single mouse click. Moreover, Converseen can convert an entire PDF document into a set of images with your preferred characteristics. You can choose from over 100+ formats, set the size, resolution, and the filename. Thanks to ImageMagick, the powerful image manipulation library, Converseen can handle more than 100 image formats, including DPX, EXR, GIF, JPEG, JPEG-2000, PNG, SVG, TIFF, WebP, HEIC/HEIF, and many others. Converseen is designed to be user-friendly, fast, practical, and best of all, it’s available for free!

TeXnicCenter is a LaTeX editor on Windows. Navigating LaTeX documents is simple due to the automatically created document outline. Errors of the LaTeX compilation can be reviewed instantly. TXC features autocompletion and comes with LaTeX templates.

AviTab is a plugin for the X-Plane flight simulator. It displays a tablet-like computer with a few apps in the cockpit. It is mainly used for flying in virtual reality. When flying in a simulator, one often needs to look up details in PDF charts, plane manuals, checklists or other documents. Using a PDF reader breaks the immersion because the virtual aviator either has to take off of their HMD or use other tools that can move windows into VR. AviTab tries to solve this problem by offering a PDF reader inside a native plugin for X-Plane. Using a plugin also opens possibilities for more apps inside the tablet, for example, to display information about the plane status or aid in navigation. When hovering over the edges of the tablet from a short distance, X-Plane will display green bars around the tablet. The upper bar can be used to grab the window and move it around inside the cockpit.

PDF4QT is open source PDF editor based on Qt framework. It contains a C++ library, applications for viewing/editing PDF documents, and a command line tool. PDF4QT is an open-source PDF editor for Windows/Linux. It is a modern solution for viewing/editing/rendering PDF documents, for users and developers alike. For developers, there is a C++ library and a command line tool for use in scripts. For users, there are four applications offering many features. The project is hosted on Github and uses the license LGPLv3. The applications are primarily used by target users to view, edit, manipulate or compare PDF documents. Users can preview these applications in the screenshots section of this webpage. Basic browsing and lots of other functionalities, such as encryption, reading a document, verification of digital signatures, editing of annotations, searching for text using regular expressions, drawing pages into an image, and much more. Several plug-ins are available.

pdf2htmlEX renders PDF files in HTML, utilizing modern Web technologies. It aims to provide an accurate rendering, while being optimized for Web display. Text, fonts and formats are natively preserved in HTML. Mathematical formulas, figures and images are also supported. pdf2htmlEX is also a publishing tool: almost 50 options make it flexible for many different use cases: PDF preview, book/magazine publishing, personal resume. pdf2htmlEX is optimized for modern web browsers such as Mozilla Firefox & Google Chrome. This is an era of Web. HTML, together with CSS and JavaScript, provides the flexibility allowing you to embed documents with beautiful themes, consistent bahivours and useful features. User experience will also be significantly improved, documents will be plugin-free and interactive, users can read while downloading.

Vanilla.PDF is a modern, high-performance, open-source C++17 SDK designed for creating, editing, signing, and analyzing PDF documents across multiple platforms. It requires no external runtime dependencies, making it lightweight and ideal for embedding into desktop applications, servers, or automation pipelines. The SDK offers full cross-platform support including Windows, Linux, macOS, and Android, with builds available for major compilers and architectures. Vanilla.PDF supports advanced PDF features such as adding CMS (PKCS#7) digital signatures, modifying content streams and metadata, and working with encryption and permissions based on standard PDF security models. It includes tools for parsing PDF internals like cross-reference tables and objects, providing fine-grained document analysis capabilities. The project is unit-tested with continuous integration pipelines, supporting sanitizers for enhanced code quality and stability.

Gerber2PDF is a command-line tool to convert Gerber files to PDF for proofing and hobbyist printing purposes. It converts multiple Gerber files at once, placing the resulting layers each on it's own page within the PDF. Each layer has a PDF bookmark for easy reference. Layers can optionally be combined onto a single page and rendered with custom colours and transparency. There is a Drill to Gerber converter available from the downloads page.

A react native PDF view component (cross-platform support) Read a PDF from a URL, blob, local file, or asset and can cache it. Display horizontally or vertically. Drag and zoom. Double tap for zoom. Support password-protected pdf. Jump to a specific page in the pdf. We use react-native-blob-util to handle file system access in this package, So you should install react-native-pdf and react-native-blob-util.

This is a PDF reader for the Be Operating System (BeOS). BePDF is based on xpdf 3.0. It handles PDF files up to PDF version 1.5 (Acrobat Reader 6.0).

An opensource typesetting environment for editing and publishing Carnatic music books in Indian languages. Supports Phonetic Translation of notation & lyrics and uses CFugue Runtime to automatically generate MIDI song files from the music notation.

fax2pdf provides a means to convert sets of G3 fax pages (encoded in a TIFF variant) into PDF. This can be used to convert fax pages received with eg. HylaFAX into a file format readily accessible/viewable with programs on most platforms.

A major feature update to KPDF the PDF reader for KDE. New features include user bookmarks (many per page) with highlighting and margin notes. KPDF has been retired as the team works on Occular but I couldn't wait that long. :) -bryan

PDF reader for AROS using MUI. Based on XPDF 3.0.2

DjVu & PDF reader for Symbian OS 9.1, 9.2, 9.3, 9.4 The program is based on Poppler, DjvuLibre.

Chordeus is yet another Chord Pro to PDF converter that creates nice looking guitar chord sheets. You can create single sheets or a whole songbook using the command line tool or a simple wizard-like GUI.

PubMed Central browser. Source code: http://github.com/dualword/dualword-pmc/

As long as there are more pages than cores, every core will get a workout. Light on dependencies, trimming borders, and aggressive caching are its major points.

A simpe text editor and pdf reader

Free open source PDF reader for smart phones using Windows Mobile 2003/2003SE, WM5 and WM6) This is a free PDF reader for smart phones using all the common Windows Mobile operating systems... Cab installer is also available for download for free.

s-pdf is a PDF file viewer for Symbian OS. It targets at an elegant tool specialized on usability, performance and mobile devices characteristic application, for both personal productivity and enterprise demand.

iTeXMac is an integrated software which components are: - a text editor dedicated to D.E. Knuth's TeX typesetting system - a frontend to a teTeX like distribution, that includes TeX engines and tools - a PDF viewer

Preprinting preparation tool for PDF ebooks. On windows create a folder build/ beside src/ directory. PDF v1.7 support. Decrypt encrypted PDFs. Join or Split PDFs. Scale to any paper size, with specified margin. Write Page numbers. Write text and transform pages (rotate, flip, move). Booklet format arrange. 2 or 4 pages per page (2-up, 4-up). More readable output syntax for easy debugging.

qpdf2 is a PDF reader and note manager for the Zaurus. It includes a gesture based user interface, asynchronous redraw, text view, highlighting with note manager, and incremental search. It works on 5x00 with 2.37 or TKC ROM, and C7x0.