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

  • Cyber Risk Assessment and Management Platform Icon
    Cyber Risk Assessment and Management Platform

    ConnectWise Identify is a powerful cybersecurity risk assessment platform offering strategic cybersecurity assessments and recommendations.

    When it comes to cybersecurity, what your clients don’t know can really hurt them. And believe it or not, keep them safe starts with asking questions. With ConnectWise Identify Assessment, get access to risk assessment backed by the NIST Cybersecurity Framework to uncover risks across your client’s entire business, not just their networks. With a clearly defined, easy-to-read risk report in hand, you can start having meaningful security conversations that can get you on the path of keeping your clients protected from every angle. Choose from two assessment levels to cover every client’s need, from the Essentials to cover the basics to our Comprehensive Assessment to dive deeper to uncover additional risks. Our intuitive heat map shows you your client’s overall risk level and priority to address risks based on probability and financial impact. Each report includes remediation recommendations to help you create a revenue-generating action plan.
  • Holistically view your business data within a single solution. Icon
    Holistically view your business data within a single solution.

    For IT service providers and MSPs that need a data platform to manage their processes

    BrightGauge, a ConnectWise solution, was started in 2011 to fill a missing need in the small-to-medium IT Services industry: a better way to manage data and provide the value of work to clients. BrightGauge Software allows you to display all of your important business metrics in one place through the use of gauges, dashboards, and client reports. Used by more than 1,800 companies worldwide, BrightGauge integrates with popular business solutions on the market, like ConnectWise, Continuum, Webroot, QuickBooks, Datto, IT Glue, Zendesk, Harvest, Smileback, and so many more. Dig deeper into your data by adding, subtracting, multiplying, and dividing one metric against another. BrightGauge automatically computes these formulas for you. Want to show your prospects how quick you are to respond to tickets? Show off your data with embeddable gauges on public sites.
  • 1
    Skim

    Skim

    A PDF Reader and Note-taker for OS X

    Skim is a PDF reader and note-taker for OS X. It is designed to help you read and annotate scientific papers in PDF, but is also great for viewing any PDF file. Skim requires OS X 10.10 or higher.
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    Downloads: 6,196 This Week
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  • 2
    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: 120 This Week
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  • 3
    mPDF

    mPDF

    PHP library generating PDF files from UTF-8 encoded HTML

    mPDF is a PHP library that generates PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files ‘on-the-fly’ from his website, handling different languages. It is slower than the original scripts e.g. HTML2FPDF and produces larger files when using Unicode fonts, but support for CSS styles etc. and has been much enhanced. Supports almost all languages including RTL (Arabic and Hebrew), and CJK (Chinese-Japanese-Korean). Nested block-level elements (e.g. P, DIV) including margins, borders, padding, line height, background colors, etc. Right-to-left languages are supported, with automatic detection of RTL characters within a document. Transposes tables, lists, text justification, and table cell alignment, as well as a full-text reversal for RTL characters. Automatically detects non-RTL characters and displays these in the original order.
    Downloads: 116 This Week
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  • 4
    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: 100 This Week
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  • Manage your IT department more effectively Icon
    Manage your IT department more effectively

    Streamline your business from end to end with ConnectWise PSA

    ConnectWise PSA (formerly Manage) allows you to stop working in separate systems, and helps you build a more profitable business. No more duplicate data entries, inefficient employees, manual invoices, and the inability to accurately track client service issues. Get a behind the scenes look into the award-winning PSA that automates processes for each area of business: sales, help desk, support, finance, and HR.
  • 5
    Dompdf

    Dompdf

    HTML to PDF converter for PHP

    dompdf is an HTML to PDF converter. At its heart, dompdf is (mostly) a CSS 2.1 compliant HTML layout and rendering engine written in PHP. It is a style-driven renderer, it will download and read external stylesheets, inline style tags, and the style attributes of individual HTML elements. It also supports most presentational HTML attributes. PDF rendering is currently provided either by PDFLib or by a bundled version the R&OS CPDF class written by Wayne Munro. (Some important changes have been made to the R&OS class, however). In order to use PDFLib with dompdf, the PDFLib PECL extension is required. Using PDFLib improves performance and reduces the memory requirements of dompdf somewhat, while the R&OS CPDF class, though slightly slower, eliminates any dependencies on external PDF libraries.
    Downloads: 98 This Week
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  • 6

    Pandoc

    The universal markup converter

    Pandoc is a universal document converter able to convert files from a multitude of markup formats into another. With Pandoc, you have a swiss-army knife of a converter, able to convert practically any markup format into any other. Pandoc contains a Haskell library for conversions as well as a command-line tool that uses this library. It can convert to and from just about anything-- lightweight markup formats, HTML formats, documentation formats, ebooks, TeX formats, word processor formats and so much more. It understands several useful markdown syntax extensions, such as document metadata, footnotes, tables, and more. If you want strict markdown compatibility however, these extensions can be turned off. Pandoc is no doubt powerful and customizable, but it is important to note that its intermediate representation of a document is less expressive than many of the formats, so it may not produce perfect conversions every time.
    Downloads: 83 This Week
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  • 7
    SumatraPDF Reader

    SumatraPDF Reader

    Multi-format (PDF, EPUB, MOBI, FB2, CHM, XPS, DjVu) reader for Windows

    Sumatra PDF is a free PDF, eBook (ePub, Mobi), XPS, DjVu, CHM, Comic Book (CBZ and CBR) viewer for Windows. Sumatra PDF is powerful, small, portable and starts up very fast. Simplicity of the user interface has a high priority. Portable version is a single executable, can be run from USB drive and doesn't write to registry. For best results use the latest release available as that's what I use and test with. If things don't compile, first make sure you're using the latest version of Visual Studio. To compile you need Visual Studio 2019 16.6 or later. Free Community edition works.
    Downloads: 80 This Week
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  • 8
    NAPS2 - Not Another PDF Scanner

    NAPS2 - Not Another PDF Scanner

    Scan documents to PDF and other file types, as simply as possible.

    Visit NAPS2's home page at www.naps2.com. NAPS2 is a document scanning application with a focus on simplicity and ease of use. Scan your documents from WIA- and TWAIN-compatible scanners, organize the pages as you like, and save them as PDF, TIFF, JPEG, PNG, and other file formats. Available on Windows, Mac, and Linux. NAPS2 is currently available in over 40 different languages. Want to see NAPS2 in your preferred language? Help translate! See the wiki for more details.
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    Downloads: 1,138 This Week
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  • 9
    jsPDF

    jsPDF

    HTML5 client solution for generating PDFs

    The leading HTML5 client solution for generating PDFs. Perfect for event tickets, reports, certificates, you name it! PDFs are ubiquitous across the web, with virtually every enterprise relying on them to share documents. We created jsPDF to solve a major problem with how pdf files were being generated. We decided to make it open-source to allow a community of developers to expand on it.
    Downloads: 50 This Week
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  • All-in-One Payroll and HR Platform Icon
    All-in-One Payroll and HR Platform

    For small and mid-sized businesses that need a comprehensive payroll and HR solution with personalized support

    We design our technology to make workforce management easier. APS offers core HR, payroll, benefits administration, attendance, recruiting, employee onboarding, and more.
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    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: 47 This Week
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  • 11
    OpenPDF

    OpenPDF

    open source Java library for creating and editing PDF files

    OpenPDF is a Java library for creating and editing PDF files with a LGPL and MPL open source license. OpenPDF is the LGPL/MPL open source successor of iText, and is based on a fork, of a fork, of iText 4 svn tag.
    Downloads: 43 This Week
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  • 12
    QPDF

    QPDF

    PDF transformation/manipulation program + library

    QPDF is a C++ library and set of programs that inspect and manipulate the structure of PDF files. It can encrypt and linearize files, expose the internals of a PDF file, and do many other operations useful to end users and PDF developers.
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    Downloads: 1,028 This Week
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  • 13
    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: 29 This Week
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  • 14
    OCRmyPDF

    OCRmyPDF

    OCRmyPDF adds an OCR text layer to scanned PDF files

    OCRmyPDF adds an optical character recognition (OCR) text layer to scanned PDF files, allowing them to be searched. PDF is the best format for storing and exchanging scanned documents. Unfortunately, PDFs can be difficult to modify. OCRmyPDF makes it easy to apply image processing and OCR (recognized, searchable text) to existing PDFs.
    Downloads: 27 This Week
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  • 15
    TCPDF - PHP class for PDF

    TCPDF - PHP class for PDF

    PHP class for PDF

    TCPDF is a PHP class for generating PDF documents without requiring external extensions. TCPDF Supports UTF-8, Unicode, RTL languages, XHTML, Javascript, digital signatures, barcodes and much more. IMPORTANT: This version will be soon marked as deprecated and replaced by a new version currently under development: https://github.com/tecnickcom/tc-lib-pdf
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    Downloads: 432 This Week
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  • 16
    Free editor for PDF documents. Complete editing of PDF documents is possible with PDFedit. You can change raw pdf objects (for advanced users) or use many gui functions. Functionality can be easily extended using a scripting language (ECMAScript).
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    Downloads: 749 This Week
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  • 17
    pdfcrack is a command line, password recovery tool for PDF-files.
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    Downloads: 434 This Week
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  • 18
    wkhtmltopdf

    wkhtmltopdf

    Convert HTML to PDF using Webkit (QtWebKit)

    wkhtmltopdf and wkhtmltoimage are open source (LGPLv3) command line tools to render HTML into PDF and various image formats using the Qt WebKit rendering engine. These run entirely "headless" and do not require a display or display service. There is also a C library, if you're into that kind of thing. The file pdf.h contains a fairly high level and stable pure c binding to wkhtmltopdf. These binding are well documented and do not depend on QT. Using this is the recommended way of interfacing with the PDF portion of libwkhtmltox. The rest of the headers directly exposes the C++ QT dependent class used internally by wkhtmltopdf and wkhtmltoimage. wkhtmltopdf is able to put several objects into the output file, an object is either a single webpage, a cover webpage or a table of contents. The objects are put into the output document in the order they are specified on the command line, options can be specified on a per object basis or in the global options area.
    Downloads: 17 This Week
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  • 19
    Tabula

    Tabula

    Extract data in CSV format from PDFs

    If you’ve ever tried to do anything with data provided to you in PDFs, you know how painful it is — there's no easy way to copy-and-paste rows of data out of PDF files. Tabula allows you to extract that data into a CSV or Microsoft Excel spreadsheet using a simple, easy-to-use interface. Tabula works on Mac, Windows and Linux. Tabula was created by journalists for journalists and anyone else working with data locked away in PDFs. Tabula will always be free and open source.
    Downloads: 14 This Week
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  • 20
    PDFCreator

    PDFCreator

    Converts every printable document to PDF, JPG, PNG, TIF and more

    PDFCreator creates professional PDFs with just a few clicks and it's free. PDFCreator comes with many professional features to merge documents, send emails, and more. PDFCreator easily creates PDFs from any Windows program. Use it like a printer in Word, Excel, or any other Windows application. A PDF takes less storage space, and is easier to send with email. Make PDF creator part of your the software suite you have installed on your computer for easy PDF creation. PDFCreator also comes with a COM programming interface that allows to integrate PDFCreator in other applications and a server mode to share PDFCreator on a network.
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    Downloads: 1,119 This Week
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  • 21
    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: 8 This Week
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  • 22

    PDFTK Builder Enhanced

    Enhanced version of the PDFTK Builder GUI for PDF Toolkit on Windows

    Free and open source GUI application for manipulating PDF files using the Windows version of PDF Toolkit (PDFtk) - split, merge, stamp, number pages, rotate, metadata, bookmarks, attachments, etc. This project is a fork of PDFTK Builder by Angus Johnson that enhances the user interface, adds functions, and enables use of later versions of PDFtk. OS: Windows. Author: David King. License: GPLv3.
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    Downloads: 268 This Week
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  • 23
    PDF-LIB

    PDF-LIB

    Create and modify PDF documents in any JavaScript environment

    Create and modify PDF documents in any JavaScript environment. Create PDF documents from scratch, or modify existing PDF documents. Draw text, images, and vector graphics. Embed your own fonts. Even embed and draw pages from other PDFs. Written in TypeScript and compiled to pure JavaScript with no native dependencies. Works in any JavaScript runtime, including browsers, Node, Deno, and even React Native. Add, insert, and remove pages. Split a single PDF into separate ones. Or merge multiple PDFs into a single document. Create new forms or fill and read existing fields. Checkboxes, buttons, radio groups, dropdowns, option lists, and text fields are all supported. If you aren't using a package manager, UMD modules are available on the unpkg and jsDelivr CDNs. Note that only some PDF readers can view attachments. This includes Adobe Reader, Foxit Reader, and Firefox. If you are using the CDN scripts in production, you should include a specific version number in the URL.
    Downloads: 7 This Week
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  • 24
    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: 6 This Week
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  • 25
    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: 175 This Week
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