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Document Processing APIs for .NET and Java Platforms

Libraries to load, assemble, search, convert, annotate, compare, and sign PDF documents, spreadsheets, presentations, images, ebooks, and more in your C#, .NET, and Java applications.

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3.4

NuGet product downloads

430

GroupDocs.Viewer

282

GroupDocs.Conversion

155

GroupDocs.Comparison

140

GroupDocs.Parser

65

GroupDocs.Annotation

84

GroupDocs.MetaData

79

GroupDocs.Assembly

67

GroupDocs.Signature

Our Products

Document processing has always been a complex process until now, with GroupDocs APIs manage your documents in any way imaginable.

GroupDocs.Total

Product Family

Suite of APIs, Document Processing and Rendering Extensions for .NET and Java.

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GroupDocs.Viewer

Product Family

Document viewer APIs display documents within your desktop solutions and websites without requiring external Viewers.

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GroupDocs.Annotation

Product Family

Annotation APIs to add and manipulate document annotations within web and desktop applications.

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GroupDocs.Conversion

Product Family

Conversion APIs to convert over 50 document and image formats within any cross platform application.

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GroupDocs.Comparison

Product Family

Document comparison and merging APIs for desktop and web applications.

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GroupDocs.Signature

Product Family

Accelerate your document signing process through e-Signature APIs.

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Prominent Document Processing Features

Full-cycle document processing

Enjoy full-cycle and intelligent document processing from loading, rendering, and editing to exporting your documents and images.

Lightning-fast speeds

Leverage our quick processing document APIs to save on turnaround time. Our libraries load, annotate documents, manipulate, and return files at lightning-fast speeds.

Security and safety

With our industry-standard security procedures, you'll never have to worry about the safety of your files. You can modify, compare, or sign documents with complete peace on mind.

File conversion and editing

Powerful document and image conversion APIs to edit and convert PDF, DOCX, XLSX, PPTX, PNG, and other file types.

Multi-platform Accessibility

Develop apps in Java, C#, ASP.NET, and VB.NET for multiple .NET frameworks and Java environments.

No dependencies

Our APIs work on all major operating systems and mobile platforms including Windows, Linux, Mac OS, Android, and iOS.

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The preferred choice of .NET and Java app developers globally

GroupDocs is the leading provider of .NET and Java document processing libraries. Our APIs are used by some of the most iconic worldwide brands, and we provide unparalleled support to our customers. Whether you're a software company, educational or financial institution, or consulting firm, we have the solutions you need to streamline your document and image processing needs and enjoy an exceptional app development experience.

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Our Happy Customers

Serving the most iconic brands around the globe

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Most Popular Tools

Given below are a few of the most liked document and image manipulation functionalities of GroupDocs APIs.

PDF reader and viewer

Render PDF, Word, Excel, PowerPoint documents, and image files.

Image, Word, and PDF Annotator

Annotate PDF, Microsoft Office, images, and other data files.

Convert PDF and Images

Perform Word to PDF, PDF to Excel, and PDF to JPG conversions.

Compare Documents and Images

Build difference-checking and comparison apps for documents and images.

e-Sign Secure Documents

Add customizable e-signatures to your official and protected documents.

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Why choose GroupDocs?

Unmatched file formats support

  • All popular file formats supported including documents, images, audio, videos, and ebooks.
  • PDF, DOC, DOCX, XLS, XLSX, PPT, PPTX, PUB, PNG, PSD, ODT, MSG, EML, MP3, MP4, and many more.

Extensively programmable libraries

  • Use GroupDocs APIs to build fully customizable .NET and Java apps.
  • Manipulate your business documents, spreadsheets, presentations, and images any way you like.

Hundreds of supported features

  • Convert Word or Excel to PDF, annotate PDFs, edit DOC, DOCX, or watermark files.
  • Work with esignatures, tables, mail-merge, attachments, shapes, and much more.

Tailored to your needs

  • Free trials and different paid licensing options to choose from.
  • Well-suited to individual users, startups, as well as small and large enterprises.

APIs for Developers

  • Programmatically process your digital documents and images in .NET and Java platforms.
  • Document APIs designed specifically for .NET and Java application developers.

Trusted by users globally

  • Preferred by developers and businesses alike, our libraries are used globally.
  • Generate optimised documents easily in standalone and distributed environments.

Do more with your documents and images

  • Create, render, edit, convert, compare, digitally sign, watermark, and export your files.
  • Experience endless possibilities by creating multi-functional, high-performance apps.

Simple integration and convenient application

  • Enjoy greater flexibility by integrating with your existing software applications.
  • Get up and running using a few lines of code with our super-fast and reliable APIs.

Multiple support channels

  • Need help? Look no further than one of our developer-led support options.
  • Explore the APIs structure, and documentation, or dive into the knowledge base.
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Testimonials

What Our Customers Are Saying About Us

"After implementing and using GroupDocs Viewer for .NET in the project it looks to be working very well. I have tested with a lot of documents and so far so good. Everything I've thrown at it renders nicely and looks just as good as it would in a PDF viewer or MS Word."

Mats OustadSenior Consultant/Partner at Novanet AS

"I am excitedly watching the growth of GroupDocs. The responsiveness of your full team has helped me greatly, when I talk to someone at GroupDocs I can guarantee that someone is listening and making things happen."

David HoffmanPhD, Psychologist

"After implementing and using GroupDocs Viewer for .NET in the project it looks to be working very well. I have tested with a lot of documents and so far so good. Everything I've thrown at it renders nicely and looks just as good as it would in a PDF viewer or MS Word."

Mats OustadSenior Consultant/Partner at Novanet AS

"I am excitedly watching the growth of GroupDocs. The responsiveness of your full team has helped me greatly, when I talk to someone at GroupDocs I can guarantee that someone is listening and making things happen."

David HoffmanPhD, Psychologist

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