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"Integrating GroupDocs.Viewer for Cloud API was simple with their fantastic Ruby SDK. There aren't that many companies out there who are willing to work with us on what we want. It's a great partnership."

Margot Baill

Product Development Director
at Hireology

GroupDocs.Total for Cloud API is a package of all document collaboration APIs listed below. With a single GroupDocs.Total for Cloud API subscription, you can enhance your app or website with the functionality for displaying, annotating, e-signing, converting, comparing and assembling over 50 types of documents and images.

Alternatively, you can order any of the REST APIs we offer individually, including:

GroupDocs.Viewer for Cloud API

The GroupDocs.Viewer for Cloud API allows you to display 50+ types of documents and images in your web/mobile app or website. The viewer provides high-fidelity document rendering, doesn’t require any software or plugin installations on the client side and comes with a customizable web-interface.

Supported file formats include: PDF, Microsoft Word, Excel, PowerPoint, Project and Outlook documents, Visio diagrams, AutoCAD drawings, raster images and many more.

GroupDocs.Annotation for Cloud API

The GroupDocs.Annotation for Cloud API allows you to easily add document viewing and annotation functionality to your web/mobile app or website. End users can work together, in real-time, to review, annotate and discuss documents and images.

GroupDocs.Annotation features a robust set of commenting and mark-up tools, comes with a customizable web UI and supports 50+ file formats, including PDF and Microsoft Office.

GroupDocs.Assembly for Cloud API

The GroupDocs.Assembly for Cloud API lets you build document assembly solutions without getting lost in the details of working with templates, fields and merging data. Your end users can prepare templates and publish online questionnaires which, when filled in, create new documents that look just like the original templates but contain custom data.

Our comprehensive API provides advanced field handling options and lets you build custom document assembly workflows seamlessly.

GroupDocs.Signature for Cloud API

The GroupDocs.Signature for Cloud API is an easy way to give your apps e-signature functionality that features detailed audit trails, 256-bit SSL encryption and anti-tampering technology for secure online document signing.

The API gives developers access to sophisticated workflows for preparing, sending, e-signing and managing signed documents online.

GroupDocs.Comparison for Cloud API

The GroupDocs.Comparison for Cloud API merges/compares two versions of a document and displays the differences between them in a diff view UI. The UI can be easily embedded to your web/mobile app or website, allowing your users to compare documents online.

Supported formats include PDF, Microsoft Word, Excel, PowerPoint, TXT and HTML.

GroupDocs.Conversion for Cloud API

The GroupDocs.Conversion for Cloud API lets you or your end users convert back and forth between over 50 common file formats, including PDF, Microsoft Office, OpenDocument, HTML, TXT, CAD, raster images (TIFF, JPEG, GIF, PNG, BMP) and many more.

Documents can be converted one by one on the fly, or added to a conversion queue.