Browse free open source PDF software and projects for Linux below. Use the toggles on the left to filter open source PDF software by OS, license, language, programming language, and project status.

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  • 1
    PDF.js

    PDF.js

    A PDF Reader in JavaScript

    PDF.js is a web standards-based platform for parsing and rendering Portable Document Formats (PDFs). Open source and built with HTML5, this PDF viewer is supported by a great community and Mozilla Labs. PDF.js can be used on both modern and older browsers, and is built into version 19+ of Firefox.
    Downloads: 122 This Week
    Last Update:
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  • 2
    PDF4QT

    PDF4QT

    Open source PDF editor

    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.
    Downloads: 72 This Week
    Last Update:
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  • 3
    PdfBooklet
    PdfBooklet is a Python Gtk application which allows to make books or booklets from existing pdf files. It can also adjust margins, rotate, scale, merge files or extract pages.
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    Downloads: 303 This Week
    Last Update:
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  • 4
    Super-PDF-Editor

    Super-PDF-Editor

    World's most comprehensive, powerful, process-based PDF editor

    World's most comprehensive, powerful, process-based and lighting fast PDF reader, editor and batch processor. PDF editing with 60+ features rich tools and function like OCR pdf and images and produce output like searchable PDF, Text, Hocr, Box, Unlv. Also, improve image enhancement before OCR operation for better OCR performance. pdf Imposition, etc. Super PDF Editor is best for bulk pdf processing, especially for the printing industry. Easy pdf imposition, booklet, n ups pages, and more. OCR performs in pdf files, scanned pdf files and any pdf files. OCR performs in image files, and supports multiple image formats. Auto and manual image enhancement for better OCR accuracy and quality. Supports 165+ languages with three languages data set. Use Multiple Languages at once. International Languages: 127 Languages, High, Medium, and Fast Quality. Scanned Images (jpg, png, gif, tiff, bmp) Multi-Page and TIFF and GIF, Scanned PDFs.
    Downloads: 19 This Week
    Last Update:
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    Super-PDF-Editor-Lite

    Super-PDF-Editor-Lite

    World's most comprehensive, powerful, process-based PDF editor

    World's most comprehensive, powerful, process-based and lighting fast PDF reader, editor and batch processor. Includes features like Create PDF from Images, HTML, Text files. Create a processing log file. Extract Page, Split Page, Rotate Page, Merge Page, Duplicate page, Move Page, Printing, and Compress Page. Improve image enhancement before OCR operation for better OCR performance. pdf Imposition, etc. Super PDF Editor is best for bulk pdf processing, especially for the printing industry. Easy pdf imposition, booklet, n ups pages, and more. OCR performs in pdf files, scanned pdf files and any pdf files. OCR performs in image files, and supports multiple image formats. Auto and manual image enhancement for better OCR accuracy and quality. Supports 165+ languages with three languages data set. Use Multiple Languages at once. International Languages: 127 Languages, High, Medium, and Fast Quality. Scanned Images (jpg, png, gif, tiff, bmp) Multi-Page and TIFF and GIF, Scanned PDFs.
    Downloads: 16 This Week
    Last Update:
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  • 6
    PDF-Shuffler
    PDF-Shuffler is a small python-gtk application, which helps the user to merge or split pdf documents and rotate, crop and rearrange their pages using an interactive and intuitive graphical interface. It is a frontend for python-pyPdf.
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    Downloads: 61 This Week
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  • 7
    PDF Split and Merge

    PDF Split and Merge

    Split and merge PDF files on any platform

    Split and merge PDF files with PDFsam, an easy-to-use desktop tool with graphical, command line and web interface.
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    Downloads: 218 This Week
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  • 8
    QuestPDF

    QuestPDF

    A library that can help you with generating PDF documents

    Quickly design and generate PDF documents with an open-source, modern, and battle-tested C# library. Forget about limitations, feel confident, enjoy your task and efficiently deliver professional products. QuestPDF is a progressive library that can help you with generating PDF documents in your .NET application by offering a friendly, discoverable and predictable C# fluent API. Do you believe that creating a complete invoice document can take less than 200 lines of code? We have prepared for you a step-by-step instruction that shows every detail of this implementation and describes the best patterns and practices. This library is created specifically for designing and arranging document layouts, with full paging support. Alternative solutions, such as HTML-based converters, are not designed for this purpose and therefore are often unpredictable and do not produce desired results.
    Downloads: 8 This Week
    Last Update:
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  • 9
    Vanilla.PDF

    Vanilla.PDF

    Cross-platform SDK for creating and modifying PDF documents

    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.
    Downloads: 7 This Week
    Last Update:
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  • 10
    workerPdf

    workerPdf

    WorkerPDF is GUI for GhostScript created for PDF conversion

    WorkerPDF uses GhostScript https://www.ghostscript.com/. WorkerPDF created for PDF conversion. Program features: - Compress pdf documents; - Combine pdf; - Moving pdf pages; - Rotating pdf pages; - Creating pdf from images; - Convert pdf to images. - Encrypt, decrypt pdf WorkerPDF использует GhostScript https://www.ghostscript.com/. WorkerPDF создан для преобразования PDF. Возможности программы: - Сжатие pdf документов; - Объединение pdf; - Перестановка страниц pdf; - Поворот страниц pdf; - Создание pdf из изображений; - Преобразование pdf в изображения. - Шифрование, дешифрование pdf
    Downloads: 12 This Week
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  • 11
    iLovePDF Api

    iLovePDF Api

    iLovePDF Rest Api - PHP Library

    Develop and automate PDF processing tasks like Compress PDF, merging PDF, Split PDF, converting Office to PDF, PDF to JPG, Images to PDF, adding Page Numbers, Rotate PDF, Unlocking PDF, stamping a Watermark, and Repair PDF. Each one with several settings to get your desired results. Strong infrastructure to offer the best-dedicated processing power. You might know us from ilovepdf.com where we process millions of PDFs daily. We offer a simple and concise API Reference and Guide as well as API Libraries with their own docs too. Our infrastructure uses the best PDF technology for processing PDF files. Merge and split documents with a variety of custom options. Remove, extract or organize PDF pages as you need. Reduce the size of your PDF while maintaining its original quality and formatting. Easily convert Images, MS Word, PowerPoint and Excel files into non-editable PDF documents. Convert PDF documents to JPG images or to PDF/A format.
    Downloads: 1 This Week
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  • 12

    toPDF

    Online service for PDF conversion (to PDF)

    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/).
    Downloads: 2 This Week
    Last Update:
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  • 13
    MagicalPdfEditor

    MagicalPdfEditor

    This is a small PDF editor based on OpenPdf core and AndroidPdfViewer

    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.
    Downloads: 0 This Week
    Last Update:
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  • 14

    Merge PDF Files

    It is a Windows library that merges standard PDFs into a final PDF

    The library is intended for developers, for inclusion in desktop applications or server services. There are lots of SDKs on the market creating (merging) PDFs (almost all of them have limitations). Our Windows library (MergePDFByNMI.dll) only merges standard PDF files (there are several PDF formats). You can send the input PDFs (by file name or by byte array) and you can have the final PDF (saved on a file or get back on a byte array). The library calls can be synchronous or asynchronous. We want to give you a benchmark, the library was used to create a PDF from single page(scanned) image by an OCR SDK (it is not included in our library, you can use any on the market): 20,000 Images (the OCR SDK creates single page PDF text searchable, running 50 threads) in 80 minutes. The size of the final PDF searchable was 800Mb. If you download the library, we provide a sample which cover all the scenarios possible (synchronous and asynchronous).
    Downloads: 0 This Week
    Last Update:
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  • 15
    PDF API HTML5 Web Apps

    PDF API HTML5 Web Apps

    Mini SDK JavaScript API library PDF web apps

    A condensed library designed to web modern applications, to quickly export your content html to pdf thanks the famous library in javascript: jsPDF. And a special thanks to the project canvg and html2canvas. Project documentation: http://ulmdevice.altervista.org/pdfapihtml5/#documentation ========== Also available service for Angular 7+: http://ulmdevice.altervista.org/pdfjsapi/ Mobile Applications: http://bit.ly/1MrlgKk Opera add-on: http://bit.ly/1kkMhTa
    Downloads: 0 This Week
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  • 16
    PDF Merge and Edit

    PDF Merge and Edit

    Python script to merge and edit sensitive PDF files

    Python script to merge and edit sensitive PDF files you don't want to upload to random sites you find on Google. Merge PDFs by adding one to another. Update a single page in a PDF (good for adding a signed page to a form) Insert a page into an existing PDF. Delete a page. Click on one of the buttons and a new window will pop up depending on the function. Pick your files and enter in the data. If there are no problems, a confirmation will pop up.
    Downloads: 0 This Week
    Last Update:
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  • 17
    pdf-editor

    pdf-editor

    Edit your PDFs without needing a subscription or creating accounts

    Edit your PDFs without needing a subscription or creating accounts. Add a GUI/Turn it into a web application. Add a parser for the command line to do multiple commands at once e.g. merge (cut pdf1) pdf2. Tested working with Python 3.8.5. Install venv (py -3.8 -m pip install virtualenv). PDF and Word documents are binary files, which makes them much more complex than plaintext files. In addition to text, they store lots of font, color, and layout information. If you want your programs to read or write to PDFs or Word documents, you’ll need to do more than simply pass their filenames to open().
    Downloads: 0 This Week
    Last Update:
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  • 18
    pdfcook

    pdfcook

    Prepress preparing tool and PDF editor

    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.
    Downloads: 0 This Week
    Last Update:
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  • 19
    PDFManager

    PDFManager

    Application to modify pdf files.

    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; -------------------------------------
    Downloads: 7 This Week
    Last Update:
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