Collection

Open Source PDF Editor

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Stirling PDF

A self-hosted, open-source PDF editor offering over 50 tools for secure, local PDF manipulation and automation.

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Okular

A versatile, multi-platform document viewer supporting PDF, EPub, comics, images, and Markdown, with annotation and signature features.

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LibreOffice

A free and open-source office suite compatible with Microsoft Office formats, offering a range of applications for various productivity tasks.

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PDFsam Basic

A free and open-source application for splitting, merging, rotating, and extracting pages from PDF files, ensuring data privacy.

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PDF4QT

An open-source PDF editor for Windows/Linux, offering a C++ library, command-line tool, and applications for viewing/editing PDFs.

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Apache PDFBox

An open-source Java library for working with PDF documents, enabling creation, manipulation, and content extraction.

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pdftk-java

A Java port of PDFtk, a tool for manipulating PDF documents, offering functionalities like merging, splitting, and filling PDF forms.

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Ghostscript

A powerful PDL interpreter and conversion tool for PDF, PostScript, PCL, and XPS, enabling flexible document processing and printing.

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OpenPDF

A free, open-source Java library and online toolkit for creating, editing, and processing PDF documents.