Documents & Writing·Standings

PDF SDKs: Compare Platforms, Pricing and Features

PDF SDKs add PDF creation, editing, conversion, and annotation features to software; choose by the PDF operations you need and where the software runs.

Use the signal score out of 10 as a quick comparison. Check the API, open-source, and free-tier marks, then review platforms, language coverage, deployment model, annotation tools, commercial licensing, and pricing.

• 31 platforms
• 19 with a free tier
• Checked 23 Sept 2026

1. #PlatformSignalPlugs inPrice
2. 1
   M

   MuPDFmupdf.com

   MuPDF is a fast, embeddable SDK for managing PDF and other document formats.

   6.5 APIOpenFree Free tier · from $299/mo
   →
3. 2
   GP

   GemBox.Pdfgemboxsoftware.com

   GemBox.Pdf is a .NET component for reading, writing, editing, and printing PDF files from .NET applications.

   6.5 APIOpenFree Free tier · $890 one-time
   →
4. 3
   SP

   Syncfusion PDF Librarysyncfusion.com

   The .NET PDF Library provides APIs to create, edit, secure, convert, and extract data from PDF documents in .NET applications.

   6.5 APIOpenFree Free tier · from $1,199/yr
   →
5. 4
   O

   OpenPDFgithub.com

   OpenPDF is an open-source Java library for creating, editing, rendering, and encrypting PDFs, including generating PDFs from HTML.

   6.4 APIOpenFree Free tier
   →
6. 5
   G

   Ghostscriptghostscript.com

   Ghostscript is a PostScript and PDF interpreter and rendering engine with conversion capabilities for PDF, PostScript, PCL, and XPS.

   6.3 APIOpenFree Free tier
   →
7. 6
   P

   PDFsharppdfsharp.net

   A free .NET library for making, editing, joining, and splitting PDFs, with drawing and signing features.

   6.3 APIOpenFree Free tier · $499 one-time
   →
8. 7
   CP

   ComPDFKit PDF SDKcompdf.com

   SDK for adding PDF viewing, editing, signing, forms, and conversion to apps.

   6.3 APIOpenFree Free tier · from $240/yr
   →
9. 8
   P

   PDFiumpdfium.googlesource.com

   PDFium is a C++ implementation of the PDF specification that can parse PDF content and render pages.

   6.3 APIOpenFree Free tier
   →
10. 9
    SP

    Spire.PDFe-iceblue.com

    Spire.PDF for .NET is a PDF API for creating, writing, editing, handling, and reading PDFs from .NET applications.

    6.3 APIOpenFree Free tier · $999 one-time
    →
11. 10
    P

    Princeprincexml.com

    A PDF publishing tool that turns HTML and other formats into files with print layouts and document features.

    6.2 APIOpenFree Free tier · from $2,000/yr
    →
12. 11
    P

    Popplerpoppler.freedesktop.org
    6.2 APIOpenFree Free tier
    →
13. 12
    NS

    Nutrient SDKnutrient.io

    Nutrient SDKs add document viewing, editing, signing, redaction, and data extraction to web, mobile, and server applications.

    6.1 APIOpenFree Free tier
    →
14. 13
    P

    PoDoFopodofo.github.io

    A free C++ library for reading, creating, changing, and signing PDFs, with text and font tools.

    6.1 APIOpenFree Free tier
    →
15. 14
    Q

    QuestPDFquestpdf.com

    A C# library for generating PDFs and image formats, with page layout and document management tools.

    6.1 APIOpenFree Free tier · from $1,999/yr
    →
16. 15
    W

    WeasyPrintweasyprint.org

    Free software that makes PDFs from HTML, with a Python library and command-line options.

    6.1 APIOpenFree Free tier · from €150/yr
    →
17. 16
    DA

    Datalogics Adobe PDF Librarydatalogics.com

    PDF SDK for creating, converting, editing, securing, and processing documents.

    6.0 APIOpenFree $5,999 usage-based
    →
18. 17
    AP

    Apache PDFBoxpdfbox.apache.org

    Free, open-source Java tool for creating PDFs, changing them, and extracting text.

    6.0 APIOpenFree Free tier
    →
19. 18
    I

    IronPDFironpdf.com

    C# library for creating, editing, and securing PDFs, including from HTML and Word.

    6.0 APIOpenFree $999 one-time
    →
20. 19
    L

    libHarugithub.com

    libHaru is a free, cross-platform, open-source library for generating PDF files.

    6.0 APIOpenFree Free tier
    →
21. 20
    CP

    callas pdfToolbox SDKcallassoftware.com

    SDK for adding PDF checks, corrections, and conversions to an application.

    5.9 APIOpenFree €5,000 one-time
    →
22. 21
    AP

    Aspose.PDFproducts.aspose.com

    PDF APIs for creating, editing, securing, compressing, converting, and extracting file content.

    5.9 APIOpenFree $1,199 one-time
    →
23. 22
    PL

    pdf-libpdf-lib.js.org

    A free JavaScript tool for building PDFs, changing pages, handling forms, and drawing text or images.

    5.9 APIOpenFree Free tier
    →
24. 23
    FP

    Foxit PDF SDKdevelopers.foxit.com

    Foxit PDF SDK is an embedded library for adding PDF viewing, editing, annotation, signing, and processing to applications.

    5.8 APIOpenFree —
    →
25. 24
    LP

    LEADTOOLS PDF SDKleadtools.com

    PDF APIs for viewing, editing, merging, splitting, converting, and extracting document content.

    5.7 APIOpenFree —
    →
26. 25
    O

    OpenHTMLtoPDFgithub.com

    OpenHTMLtoPDF is a pure Java library that renders well-formed XML/XHTML and some HTML5 using CSS for PDF or image output.

    5.7 APIOpenFree Free tier
    →

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How to choose

Which PDF operations do you need?

Start with the PDF operations your application requires, then compare the operations listed for each SDK. Annotation tools are a separate comparison point, so check them when markup or comments matter.

Which platforms does it need to run on?

Match the supported-platform labels to your environment: Linux, Windows, macOS, web, API, or self-hosted. Deployment model matters when you need software to run on your own infrastructure rather than through a hosted service.

Can you try it before paying?

Use the free-plan mark to find no-cost access, and read pricing notes for trial periods. Apache PDFBox and Ghostscript list free plans, while Aspose.PDF lists a 30-day trial and GdPicture.NET a 60-day trial.

What will a paid PDF SDK cost?

Paid pricing ranges from published starting points to quotes. Apryse SDK lists $1,500 per year, GemBox.Pdf lists $890, and Datalogics Adobe PDF Library lists $5,999 per year; Adobe PDF Library SDK and others use pricing on request.

Does the license fit commercial software?

Check the commercial-license field before shipping a product. The board also marks whether code is open source; the listed open-source status is a separate check from commercial-use terms.

Questions

What is a PDF SDK used for?

A PDF SDK adds PDF operations and annotation features to an application. Compare the operations listed for the SDK with the tasks your software must perform.

Which PDF SDKs have a free plan?

The free-plan mark identifies options with no-cost access. Apache PDFBox, Ghostscript, Adobe Document Generation API, and GemBox.Pdf are examples listed with a free plan.

Are any PDF SDKs open source?

The list’s open-source field shows no open-source options.

Which PDF SDK platforms are supported?

Platform labels include Linux, Windows, macOS, self-hosted, API, and web. Check the labels for a tool against your deployment needs.

How much does a PDF SDK cost?

Pricing notes include free plans, paid starting prices, and quotes. Examples range from GemBox.Pdf at $890 to Datalogics Adobe PDF Library at $5,999 per year.

Some top positions on this board can be paid placements, standing where they were sold. The facts on each platform are not for sale. How we rank · Disclosure