Open Source Java PDF Software

Split and merge PDF files with PDFsam, an easy-to-use desktop tool with graphical, command line and web interface.

OpenDataLoader PDF is an open-source document processing system designed to convert complex PDF files into structured, AI-ready formats such as Markdown, JSON, and HTML while preserving layout, hierarchy, and semantic meaning. It focuses on enabling downstream use cases like retrieval-augmented generation (RAG), knowledge extraction, and document intelligence pipelines by maintaining accurate reading order and spatial metadata through bounding boxes. The tool combines deterministic parsing methods with an optional hybrid AI-powered mode that improves extraction quality for difficult layouts such as multi-column documents, scanned files, and scientific papers. It includes built-in OCR capabilities supporting dozens of languages, making it suitable for digitizing low-quality or image-based PDFs. A key differentiator is its emphasis on accessibility automation, as it can generate tagged PDFs aligned with accessibility standards, significantly reducing manual remediation effort.

ConcatPDF is the tool to concatenate PDF files. It can concatenate, extract, encrypt, decrypt, configure PDF files, convert image files to PDF. GUI version and CUI version are both available. iText.NET is iText porting on .NET Framework by J#. This library allows you to generate PDF, (X)HTML, XML, RTF files on Microsoft.NET Framework including ASP.NET.

iText is an open-source PDF library available for Java and .NET (C#). iText allows you to effortlessly generate and manipulate standards-compliant PDF documents with a powerful and feature-rich SDK. With iText, you can create archivable and accessible PDFs, split and merge documents, fill and flatten forms, digitally sign documents, and more. iText add-ons enable additional functionality, such as PDF creation from HTML templates, secure redaction, OCR, and much more. The latest versions of iText build on the success of previous versions and feature an improved document engine, high and low-level programming capabilities, and a more efficient modular structure. iText represents the next level for developers looking to leverage PDF in document workflows. The main project page for iText is now on GitHub, and all the latest releases, code samples, open source add-ons and tools, etc. can be found at https://github.com/itext/.

PDF Guru is a simple in use program for merging multiple images and PDF files into a single compact PDF file. It is capable of selecting specific PDF pages or range of pages, which lets you have more control on the output file. Be able to produce compacted, smaller sized files in any operating system. Its features makes it a great, must have, tool for everyone.

A simple tool to rearrange/merge/delete pages from PDF files. The modular backend system uses either JPedal or JPod to display PDFs and iText or Apache PDFBox to save them. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Development of this project has moved to GitHub. Please check https://github.com/mgropp/pdfjumbler for current releases! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

A simple online service for PDF conversion. This project is a simple library and also a web application. It offers a REST service and a simple upload service for synchronous conversion. This library/application doesn't contain conversion libraries because it's a wrapper for existing tools. toPDF currently supports the open source tool PDF Creator (http://www.pdfforge.org) and the commercial solution, easy PDF, from BCL (http://www.pdfonline.com/easypdf/sdk/).

This is a small PDF editor based on OpenPDF Core and AndroidPdfViewer. As there is not many open-source easy working PDF editors and PDF wizards, I decided to create a simple directory to resolve my issues. Here I have worked on two separate cores, add some functionality to them, and combined them together to achieve my target. I am working on this repo, any help will be appreciated. Just clone the project and trance the source code, It's really easy and clear. All functionality in AndroidPdfViewer (Load, Read, Render, Show, ... PDF Files) Add annotations into pdf file. Add the Image into pdf file as OCG item. Remove annotations from pdf file. Update annotation in pdf file.

Portable Java app to merge single PDF documents and JPG images to one PDF document. Standalone app include own Java. * Application is in the BETA version - please report bugs and issues on Tickets page. *

With the application you can open and browse pdf books. In addition you will be able to inspect the codes for characters or locate the images. May be an example of basic use of pdfbox. JDK-17 compatibility You will find more about it at this web site: https://www.frojasg1.com:8443/downloads_web/web/html/pdfInspector.html?origin=sourceforge

Java application to modify PDF files. It may be used to merge two or more PDF files, delete pages, change page order, etc. Windows installer and source code to download. ------------------------------------- Version 2.0: You may create PDF files from *txt files; You may create PDF files from pictures; You may choose the order of the pages when merging files; New Interface; Available for Linux; -------------------------------------