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

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  • 1
    PDFPatcher

    PDFPatcher

    A versatile toolkit for PDF manipulation

    PDFPatcher (aka “PDF补丁丁”) is a versatile toolkit for PDF manipulation—editing document metadata, bookmarks, page layout, content restrictions, rotation, compression, merging/splitting, image extraction, and more, all within an intuitive interface. Merge/split PDFs or images, preserve or add bookmarks, and set page dimensions. Batch style/color/target changes, regex/XPath search/replace, mid‑page positioning. Modify PDF metadata, page numbers, links, initial view mode, and remove open actions.
    Downloads: 22 This Week
    Last Update:
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  • 2
    An easy, simple tool for merging PDF files.
    Downloads: 41 This Week
    Last Update:
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  • 3

    Pdf Split and Merge with Bookmark Import

    PDF merging with bookmarks and pagination

    PDF Split and Merge tool is implemented using the PdfSharp library and is either GUI or command driven.It is useful for automated document creation.It allows bookmarks from the input pdfs to be imported and flexibly embedded in the destination document. PDF pages can be numbered and annotated with a footer label.
    Downloads: 14 This Week
    Last Update:
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  • 4
    PDF Password Remover

    PDF Password Remover

    Remove Password from multiple PDF files in one click

    PDF Password Remover is a convenient tool that enables you to remove passwords from multiple PDF files simultaneously. Just provide the current password, and the tool will unlock the files, allowing future access without any password. As a portable app, it doesn't require installation. You can copy it to a USB drive and use it directly on any Windows machine.
    Downloads: 70 This Week
    Last Update:
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  • 5
    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: 2 This Week
    Last Update:
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  • 6
    AK PDF Editor

    AK PDF Editor

    Best tool to merge, rearrange, rotate, delete, compress PDF files

    A very lightweight software for PDF file editing. You can merge, rearrange, rotate, delete, compress PDF files in a very simple way.
    Downloads: 8 This Week
    Last Update:
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  • 7

    PDF Merger and Combiner

    It is Used to merger number of pdf in single file.

    PDF MERGER is the fast and powerful way to Merge PDF files with password protection as well as you can apply stamper with either any type of image or text. Using this utility you don’t required installation of Adobe Acrobat. FEATURES: Merge as many PDF files in single PDF file. Add a page or several pages to an existing PDF file. Generate new page number for generated every pages. you have set of options to show page number at any positions. Standalone software, Adobe Acrobat and Reader NOT required! Simpler and more usable. Easy to use. Add password to prevent unauthorized opening or printing. Protect content with Copyright, Trademark, License or Watermark either text or image.
    Downloads: 3 This Week
    Last Update:
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  • 8
    EastPDFtakeoff

    EastPDFtakeoff

    PDF Measuring and Takeoff Software for Construction

    Easy-PDF-takeoff is windows program created for small business. It allows you to easily measure drawings received in PDF format without having to print them on paper, open them in AutoCAD and do any manual calculations. If you find yourself doing quantity takeoffs or checking dimensions on PDF drawings (estimators, project managers) this app can help you do your job 50% faster! Most takeoff software on the market cost thousands of dollars and designed for large companies with multiple users. We wanted to create something very simple and easy to use, and also very affordable so individuals and small businesses will have access to similar time-saving tools. We are currently Beta testing the program to get the bugs out. Email us for a FREE license key, or to report any issues. This App can also be used as a PDF viewer and Annotation tool. If you work with large PDF files and find that your computer slows down, this Program will give you much faster performance and better tools
    Downloads: 8 This Week
    Last Update:
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  • 9

    MoonPdf

    WPF based PDF viewer control and sample PDF viewer

    Contains a WPF control for displaying PDF files and a sample PDF viewe
    Downloads: 3 This Week
    Last Update:
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  • 10
    PDF2DJVU Graphical Front-end

    PDF2DJVU Graphical Front-end

    Simple Graphical frontend for merging and converting DJVU from PDF.

    Graphical frontend for pdf2djvu converter with the ability of batch and parallel conversion and to merge seperate djvu files into one. .Net 2.0 or newer required.
    Downloads: 3 This Week
    Last Update:
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  • 11
    Add Pages to an existing PDF Remove/split PDF-Documents Extract Text/Images from PDF-Documents Change Document Metadata Shrink File Size Simple and flexible User Interface No Cloud-Services needed!
    Downloads: 1 This Week
    Last Update:
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  • 12
    ASP.NET PDF Viewer by GroupDocs

    ASP.NET PDF Viewer by GroupDocs

    Secure, Browser-Agnostic ASP.NET PDF Viewer with DRM Features

    This sample project is created by the GroupDocs showcase team to demonstrate key benefits of an ASP.NET PDF viewer built using the commercial library – GroupDocs.Viewer for .NET. The viewer allows you to display PDF documents across all standard web-browsers (IE8+, Chrome, Mozilla Firefox, Safari 5+, Opera, etc.) without having to install any software or plugins on end-user machines. Another core feature – is the ability to display PDFs in a read-only mode, so that end users can’t download, print or copy original PDF files while viewing them in a browser. Please note that GroupDocs.Viewer for .NET is a paid library. In order to setup and run this project, you will need to download the GroupDocs.Viewer for .NET library from the GroupDocs website. For more details on the sample ASP.NET PDF viewer and to download the library, please read this article: > http://groupdocs.com/blog/asp-net-pdf-viewer-built-based-on-the-groupdocs-viewer-for-net-library
    Downloads: 0 This Week
    Last Update:
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  • 13
    COWON A3 Images Preparation Script
    Batch script for images (manga/comics) preparation to be comfortably viewed on COWON A3 PMP. It also can be used in conjunction with xps2img (http://xps2img.sf.net) to do PDF conversion for reading on A3.
    Downloads: 0 This Week
    Last Update:
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  • 14
    DinkToPdf

    DinkToPdf

    C# .NET Core wrapper for wkhtmltopdf library that uses Webkit engine

    .NET Core P/Invoke wrapper for wkhtmltopdf library that uses Webkit engine to convert HTML pages to PDF. Copy the native library to root folder of your project. From there .NET Core loads the native library when the native method is called with P/Invoke. You can find the latest version of the native library. Select the appropriate library for your OS and platform (64 or 32-bit). The library was not tested with IIS. The library was tested in console applications and with Kestrel web server both for Web Applications and Web API.
    Downloads: 0 This Week
    Last Update:
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  • 15
    Free HTML to PDF for .NET and C# Library

    Free HTML to PDF for .NET and C# Library

    Free HTML to PDF Converter for C# .NET and ASP.NET MVC

    HiQPdf Library for C# .NET offers you a modern, simple, fast, flexible and powerful tool to create complex and stylish PDF documents in your applications with just a few lines of code. Using the high quality HTML to PDF conversion engine you can easily design a document in HTML with CSS3, JavaScript, SVG or Canvas and then convert it to PDF preserving the exact content and style.
    Downloads: 0 This Week
    Last Update:
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  • 16

    Free pdf merger and splitter simple

    Free PDF Merger And Splitter simple

    A simple PDF merger were you can add PDF's, sort them and merge them into one file. You can also split a pdf based. Also works on Windows 10. No registration needed, just simple and quick.
    Downloads: 0 This Week
    Last Update:
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  • 17
    HTML-to-PDF
    HTML to PDF conversion using GUI or command line batch files. Requires ABCpdf .NET for HTML parsing and PDF processing.
    Downloads: 0 This Week
    Last Update:
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  • 18

    JPG to PDF EasyMove

    You have a free pdf converter\creator solution

    You have a free pdf converter\creator solution. It is under MIT license, therefore no one wants to pay.
    Downloads: 0 This Week
    Last Update:
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  • 19

    PDF converter

    Simple, lightweight PDF converter.

    It can convert your Image/ Word Documents to PDF files. Ideal for scanned documents that need to be E-Mailed.
    Downloads: 0 This Week
    Last Update:
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  • 20
    A XHTML to PDF converter: with this library, you can transform simple XHTML pages to nice and printable PDF files. This project is based on the excellent webzine article "Pdfizer, a dumb HTML to PDF converter, in C#" written by Jonathan de Halleux.
    Downloads: 0 This Week
    Last Update:
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  • 21
    PhaseIt

    PhaseIt

    Graphical PDF Library

    PhaseIt is a PDF database program for your literature projects. It allows to import PDFs using simple drag-and-drop and offers fast, graphical categorization of your files, as well as easy access via your favorite installed PDF reader.
    Downloads: 0 This Week
    Last Update:
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  • 22
    A simple PDF splitter that uses PDFSharp. You can split, merge, create or convert PDF files to text. Passing meta-data to newly created chunks is possible. Naming options, like adding date or adding index number are available.
    Downloads: 0 This Week
    Last Update:
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  • 23

    Zyroid PDF Reader

    Free PDF Reader

    Simple PDF Reader to view .pdf files.Comes with the Acrobat Toolbar for advance options.
    Downloads: 0 This Week
    Last Update:
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  • 24

    TinyPdfViewer

    yet another Pdf viewer

    Simplest pdf viewer based on the COM interface provided by Adobe. In contrast to Adobe reader, the viewed pdf will be reloaded if file changes occur.
    Downloads: 0 This Week
    Last Update:
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  • 25

    tiny ppi editor

    tiny tool to change ppi of a jpeg

    I had a picture representing an A4 page, I resized it with Microsoft picture manager (changed definition) to lower the size of the file, but in the process "picture manager" didn't change the ppi "pixel per inch" automatically to keep the picture to the size of an A4 page. So my other tools (an "all to pdf" converter) couldn't understand the right size of the picture and the output was a very small page. You need softwares like irfan vue, xnvue, or photoshop to edit the ppi, which doesn't make sens to me. So I made this tiny tool, with C#, to allow changing the ppi of a jpeg file very easily.
    Downloads: 0 This Week
    Last Update:
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