Working with Forms and Envelopes in the GroupDocs.Signature for Cloud App

GroupDocs.Signature for Cloud App - IconHi, everyone!

The Cloud platform from GroupDocs offers a number of applications designed to help businesses and individuals collaborate on documents. One such app is GroupDocs.Signature. It is a secure and legally binding e-signature service that allows you to sign documents online right from a web-browser. With GroupDocs.Signature you can streamline the document pre-processing, signing and post-processing workflows to get documents signed faster and make them easier to manage.

One of GroupDocs.Signature remarkable features is the ability to add merge fields to documents when you need signers to enter some details before actually signing a document (for example first name, last name, date, order quote, etc.). Documents that have such fields can be completed and signed online. GroupDocs.Signature supports different types of fields, including text, drop-downs, radio buttons, checkboxes, and attachments.

Depending on the type of document you want to get signed (and filled with signers details), you can prepare it as a simple form or as an envelope. To help you decide which option you should choose and how to manage forms, we've prepared a couple of quick guides for you:

The difference between an envelope and a form >>>
Working with forms >>>

Creating and Customizing Email Notifications in the GroupDocs.Signature for Cloud App

GroupDocs.Signature for Cloud App - IconWe've recently published a new documentation article for the GroupDocs.Signature for Cloud App to discover several features that may be very helpful to get documents signed in time. Knowing these, you can greatly improve and tailor document collaboration under your needs.

The online signature application from GroupDocs is designed to help individuals and businesses get documents signed faster. GroupDocs.Signature is a legally binding and secure web service that provides a complete and convenient signature workflow, starting from document preparation to sending, signing and notifying all involved parties about a completed document. No matter where you or your partners are, GroupDocs.Signature allows you to get documents signed using any web-enabled device.

Event notifications in GroupDocs.Signature are designed to make it easy to involve the right parties at each step in the online signature workflow, and keep you informed on the signature progress. Notifications help invite signers via emails, inform you when someone has completed a form or signed a document, inform all parties when a document has been closed, etc. GroupDocs.Signature offers a number of standard notification messages that can be triggered at different stages during the signature workflow. But each notification can be customized to your own needs using wide configuration options available in your admin account. The following article discovers how to find and configure these settings to customize email notifications.

Go to the article >>>

Focus on GroupDocs.Annotation for Java & news from GroupDocs, August 2014

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Monthly Newsletter
August, 2014
Add Annotation Features to Java Web Apps
With GroupDocs.Annotation for Java, developers can add sophisticated annotation features to Java web-based applications.

GroupDocs.Annotation helps groups collaborate on and finalize documents and images. They can mark up documents in many ways, using highlights, comments, strikethroughs and other intuitive tools. When done, they can save the annotated document to a Microsoft Word file to work on offline.

Product News
GroupDocs.Viewer for .NET Library

  • Support for adding watermarks to printed pages and settings to enable them.
  • Option to pre-load pages on the client-side added.
  • Polish localization added.
  • Improved support for mobile devices.

GroupDocs.Viewer for Java Library

  • Released GroupDocs.Viewer for Java 2.3.0
  • Support for custom locales.
  • Support for rendering XPS files.
  • Support for P8 FileNet.
  • Support for sub-folders.
  • Added image to PNG rendering.
  • Improved support for long file names and URLs.
  • Improvements to email, Microsoft Excel, and Word document viewing.
  • Updated UI.
  • A number of additional minor fixes.

GroupDocs.Annotation for Cloud App

  • Undo/redo feature added.
  • Underline tool added.
  • Ruler added.

GroupDocs.Annotation for Java Library

  • Support for text redaction.
  • Support for exporting annotations and comments directly to a Microsoft Word document when the input is a Microsoft Word document.
  • Updated UI.
  • A number of fixes and enhancements.

GroupDocs.Signature for Cloud App

  • Introduced tagging to envelopes, forms and templates to help users organize their work.
  • A number of fixes.

GroupDocs.Signature for .NET Library

  • Supports using template when generating a summary page.
  • Various fixes and enhancements.

GroupDocs.Comparison for .NET Library and Cloud App

  • Improved DOC/DOCX comparison.
  • Improved detection of changed styles.
  • A number of fixes.

GroupDocs.Conversion for .NET Library and Cloud App

  • General fixes and enhancements.
Coming Soon
GroupDocs.Viewer for .NET Library

  • Tab-based view for Microsoft Excel documents.
  • Faster viewing of Microsoft Excel, PowerPoint and Project files.

GroupDocs.Annotation for .NET Library

  • Automatic upgrade of the storage schema for new versions.

GroupDocs.Annotation for Cloud Library

  • Support for text replacement, pointers, text and resource redaction, underline text and ruler.

GroupDocs.Annotation for Cloud App

  • Advanced undo/redo feature.

GroupDocs.Signature for Cloud App

  • Forms for multiple documents.

GroupDocs.Comparison for .NET Library and Cloud App

  • Detect moved text.
  • Compare Microsoft Visio project files.
  • Improved comparison of native Microsoft PowerPoint files.

GroupDocs.Conversion for .NET Library and Cloud App

  • Batch conversion.
From The Library
Use GroupDocs.Comparison for .NET to Compare Documents in C#/ASP.NET
GroupDocs.Comparison for .NET is a free-standing library that developers use to integrate comparison features into their applications. We've written a detailed article that explains how to use it to compare documents in a desktop environment, or online. Read the article.
Joomla! Extension for GroupDocs.Viewer for Java
We have released a number of extensions that allow developers to integrate our apps and libraries into their websites. Recently, we released one that allows you to integrate GroupDocs.Viewer for Java into Joomla! websites. By hosting both library and documents you are in complete charge of your own infrastructure and security. Find out more.
How Can We Help You?
Do you have ideas for what you'd like to see us do in the coming months? Take a minute to tell us.
Integrations and New Cloud API Samples
Product Releases And Updates
GroupDocs.Total for .NET – The latest release of our .NET libraries.
GroupDocs.Annotation for .NET 1.4.0 – Undo/redo, import/export underlines and other improvements and fixes.
GroupDocs.Assembly for .NET 1.0.3 – Improvements and fixes.
GroupDocs.Viewer for Java 2.3.0 – Support for custom locales, sub-folders, P8 FileNet and rendering XPS files.

Get More Flexibility with the New and Improved Features in the GroupDocs.Viewer for Java Library 2.3

GroupDocs.Viewer for Java libraryHi, everyone!
We've recently released a new version of the Java document viewer - GroupDocs.Viewer for Java version 2.3 - and would like to discover its new features and enhancements in this article.

GroupDocs.Viewer for Java is an HTML5-based document viewer library designed to make it easy for developers to integrate into their Java apps. The viewer supports more than 50 document and image types, including PDF, Microsoft Word, Excel, PowerPoint, AutoCAD, Visio, etc. Implemented within HTML5 standards, the viewer allows documents to be viewed from any web-enabled device using only a web‑browser.

Let's now look at the enhancements seen in the latest version of the library (version 2.3):

Application Path Flexibility

The application path allows the viewer to link and handle client-server requests correctly. Starting from version 2.2, it is possible to use a relative paths. You can now also choose between three different types of the applicationPath parameter value:

  • Absolute path, like:
  • Custom URL prefix, like:
    Prefix (custom-url) is added to the full application path, including context path ‑
  • null value
    In this case the viewer uses the default application request URI (for example,

Added UI Configuration Parameters

  • PDF Printing
    Thanks to the new usePdfPrinting parameter, you can now print documents directly to PDF. Just set the parameter value to true. In this case, when clicking the Print button, a user gets the document printed out in the PDF format.
  • Page Reordering
    When the supportPageReordering parameter is set to true, users can change a documents page order by dragging page thumbnails in the left side panel. Please note that this option does not change the original document itself. It is intended to help users conveniently browse and collaborate on documents in the web UI. Also, the page reordering feature currently works in the image-based rendering mode only. Set the useHtmlBasedEngine parameter to false in order to enable the feature.


Protecting documents with watermarks in now also easier. There are two parameters available:

  • watermarkText - specifies text for the watermark
  • watermarkColor - specifies color of the watermark (6 hex digits, i.e. fb3000)

Watermarks are added in a separate layer over the rendered documents, so that the original files are not modified. If you want to keep your documents safe, please be sure to disable both the Download and Printing options as well. Also, please note that watermarks can be added in the image-based rendering mode only.

Custom Localization

Another great feature added in the latest versions of the Java document viewer - support of custom localizations.

In the earlier versions you would have to tweak the viewer's front-end with your own localization (as described here). Starting from now, you can simply add a localization file. For example, assume we need Portuguese localization. First, we have to create a file called and fill it with translated terms:

The localization file name has to be in the following format: <locale>.properties to be recognized with the viewer. Once the file is ready, place it somewhere in the system (G:\Projects\GroupDocs\app\locale) and set the path as the localesPath parameter value:

Please note. This value has to be strictly directory path only. Do not append the locale file name to the path, since GroupDocs.Viewer automatically picks up an appropriate localization for your system. So you can place several localization files in that directory.

Other Improvements

  • Added support for XPS file format
  • Implemented P8 FileNet support
  • Added sub-folders navigation. Now you can browse and open any sub-folder content.


For a complete list of changes, please check the release notes in the GroupDocs file archive. The library itself can be downloaded from there.

For more information on the viewer and its features, please visit GroupDocs.Viewer for Java home page.

To help you install and get started with the viewer quickly we also provide example code projects and detailed documentation with technical articles and guides.

GroupDocs.Comparison for .NET Library – Compare Two Word Documents in C# / ASP.NET

GroupDocs.Comparison for .NET LogoNeed to merge / compare two Word documents in .NET (C#, VB.NET)? GroupDocs.Comparison is the solution you might be looking for. It is a lightweight .NET library for generating diffs between two versions of a document. The library merges documents, compares their contents and styles, provides you with a complete list of changes found and also generates a diff view through a convenient web UI.

The UI can be easily integrated in any ASP.NET project, including MVC and WebForms. Merged documents are displayed through the UI with the diff view approach similar to Microsoft Word's change tracking feature. End users can view compared documents from any modern browser without having to install any plugins or 3rd party software.

If your application does not produce a UI, you can simply use the ComparisonService to process documents in the console or a desktop app.

Supported File Formats

The library allows you to merge / compare up to 3 Word documents. You can compare DOC vs DOC, DOCX vs DOCX and DOC vs DOCX. In addition to that, the library allows you to compare two PDF, Excel (XLS, XLSX), PowerPoint (PPT, PPTX), plain text (TXT), OpenDocument (ODT) or HTML files.

Compare Text & Formatting

The library recognizes changes in text, tables, headers, footers, footnotes and even styles formatting. The last option is currently available only for Microsoft Word documents and recognizes changes in font type, size and style, such as bold, italic, underline, strike-through, etc.

Style changes detected with GroupDocs.Comparison for .Net

Compare 3 Versions of a Word Document

In console mode, GroupDocs.Comparison can compare up to 3 Word documents at once. To enable the feature, use the following code in place of the TargetFileName method of the ComparisonService instance:


Let's now take a quick look at two simple scenarios of how the library can be used. As I already mentioned, the library can work both in conjunction with the diff view web UI and in a desktop environment.

Displaying Diffs through the User Interface

Assume we have an MVC application. There are few things that have to be configured to deploy the library. First, in the Application_Start of your Global.asax, you need to set the base and license paths. Also, please remember to initialize GroupDocs.Comparison:

Once this is done, on the view template you will be able to launch document comparison with the following lines of code:

This code is for the Razor template engine. Also, please don't forget to include JavaScript and CSS resources on the page.

Comparing Documents in a Desktop Environment

To process files in a desktop application you have to follow the same pattern: first, configure and initialize the library then launch the document comparison mechanism:

Basically, all comparison operations in the console version are the same as in the UI one. The Compare method returns a set of found changes that you may then process yourself. One thing that is different in the UI scenario from the console one is that all document processing operations are performed through the ComparisonService instance:


For more details on the library and to download a free evaluation copy, please visit the product's homepage. We also prepared documentation and project samples to help you get started quickly. Feel free to contact us for any deployment assistance or feature requests.

Convert Back and Forth Between 50+ Document Formats in VB.NET & C#: Word to PDF, PDF to Image, HTML to PDF and More

GroupDocs.Conversion for .NET Library - IconGroupDocs.Conversion for .NET is one of emerging products in the GroupDocs product family. GroupDocs.Conversion allows users to convert documents to and from over 50 different formats, including Word (DOC, DOCX) to PDF, PDF to image (TIFF, JPG), HTML to PDF, Word to HTML and many more.

Unlike most of the software on the market, GroupDocs.Conversion is a .NET middleware designed specifically for easy integration into other applications. Thanks to its flexible API, GroupDocs.Conversion can be used in any .NET application: desktop-based (like console apps, WinForms, WPF and Windows services) and web-based (ASP.NET, including WebForms and MVC).

In one of our earlier articles we discovered some of the key features and benefits of this library. In particular, GroupDocs.Conversion allows fast on-the-fly conversion and provides a number of interesting features designed especially for ASP.NET. For example, progress callbacks let the calling webpage know when a conversion has been completed.

In this introduction article I'd like to show you basic and advanced usage of the GroupDocs.Conversion for .NET library in several types of applications.

Go to the article >>>

GroupDocs.Viewer for Java can now be seamlessly integrated into Your Joomla! Website

GroupDocs.Viewer for Java iconWe're glad to announce the release of the GroupDocs.Viewer for Java extension for Joomla!. Developers who work with the Java version of our HTML5 document viewer can now seamlessly integrate it into Joomla! websites. The extension has been approved by the Joomla! marketplace team and is available for download from the official Joomla! marketplace.

With the GroupDocs.Viewer integrated into Joomla!, you can easily embed and display all documents supported by the viewer on your Joomla! web-pages. These include: PDF and Word documents, Excel spreadsheets, PowerPoint presentations, Visio diagrams, CAD files, raster images and a lot more - over 50 file formats in total. Documents can be embedded to a web-page along with the GroupDocs.Viewer's UI, which allows users to conveniently navigate large documents right on a web-page.

The extension is free for developers who have a GroupDocs.Viewer for Java license. If you don't have a license yet, but would like to test the Java version of the GroupDocs.Viewer on your Joomla! website, please download a free evaluation copy of the library from this page.

For more details on the extension, please visit the Joomla! marketplace.

GroupDocs.Comparison for .NET – C# Diff Library for Comparing Text Files

GroupDocs.Comparison for .NetThe GroupDocs.Comparison for .NET is a C# diff library which allows you to merge and compare different versions of a text file and display differences between them through a diff view UI. The library is smart enough to detect both context and style changes. It can be used to compare almost all common text file types, including: PDF, Microsoft Word (DOC, DOCX), Excel (XLS, XLSX), PowerPoint (PPT, PPTX), plain text files (TXT), OpenDocument (ODT) and HTML.

The library merges uploaded text files and then displays diffs between them with a redline view approach - similar to Microsoft Word's change tracking view. Merged documents are rendered trough the web UI with pure HTML5, JavaScript and CSS. This allows end users to see differences between the compared text files using any modern web-browser.

GroupDocs.Comparison is a 100% independent C# diff library - there is no need to install Microsoft Office, Adobe Acrobat or any other software either on server or client side. Thanks to the flexible API, you can use GroupDocs.Comparison with your own UI or in the console and any types of web, mobile and desktop apps.

We've already presented the library to our regular readers. Since then the library has seen a number of exciting improvements. Today, we'd like to discuss them in detail.

Support for Streams

The latest version of the diff library was enhanced with an ability to read text files from streams. Now you can easily connect it to your service or implement a complex project with documents hosted anywhere you need. Stream initialization works the following way:

Flexible API for Easy Integration Into Your Workflow

Although the diff view UI that comes with the library is 100% customizable, you can use the flexible API to build your own UI from scratch, or even use the library without the UI and compare documents on the server-side:

Diff Text Styles

In addition to context differences, GroupDocs.Comparison can now identify changes in text styles, including bold, italic, underline, strike-trough, font changes, etc.

GroupDocs.Comparison Diff UI - Compare Text Styles

Accept and Reject Changes in Word Files

Differences found between Word (DOC, DOCX) files can be accepted or rejected right in a web UI and the result can be then exported to a final document in DOC/DOCX format.

GroupDocs' C# Diff Library - Accepting and Rejecting Changes

Merge & Compare Up to 3 Word (DOC, DOCX) Files

The library allows you to compare up to 3 versions of a Word file and generate a merged results file. You can also see which diffs came from what version of the file.

Send Result Documents to Streams

Now you can send merged documents and the diff details to streams, without having to write these directly to an output file.

Diff Summary Tumbler

In case you don't need a summary with a list of all differences to be included in the resulting file, you can now disable this feature easily:

Enhanced Sample Project in C#

We've updated our demo written in C# to reflect the latest features and help you get started with the diff library quickly. Please feel free to download the demo from this page.


For more details on the diff library, please visit its homepage. Also, download a free evaluation copy and a demo. If you'd like to test the library without any functional restrictions, please contact sales for a free 30-day license. We also offer free deployment support, so please don't hesitate to contact us - we'll be happy to help.

Product updates and roadmap: news from GroupDocs, July 2014

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July, 2014
Securely Sign Documents in the Cloud
GroupDocs.Signature for Cloud is an API that allow developers to add secure e-signature features to their apps. Platform and language independent, the API supports different types of signatures, a variety of workflows, reminder management, contact management and signer roles.
Product News
GroupDocs.Viewer for .NET Library

  • Improved performance when viewing large documents.
  • DWG file format support.
  • Support for Amazon S3 and Azure storage.

GroupDocs.Viewer for Java Library

  • Support for TIFF Files.
  • Added parameters to improve watermark handling, PDF printing and page reordering.
  • Support for relative application path.
  • Support for switching browser cache.
  • Simpler license verification when GroupDocs.Viewer is used in another application.
  • Fixes for various issues.

GroupDocs.Annotation for .NET Library and Cloud App

  • DWG file format support.
  • Redacting (blacking out) text.
  • Hiding tools.
  • Print view with annotations.
  • Support for Amazon S3 and Azure storage (.NET).

GroupDocs.Annotation for Java Library

  • User interface improvements.
  • Arrow annotation type added.
  • Support for importing comments and replies on point, area, text and polyline annotations.
  • General fixes.

GroupDocs.Signature for Cloud App

  • Take signer photo for authentication when signing envelope.
  • Add comments to envelopes.
  • A variety of bug fixes.

GroupDocs.Signature for .NET Library

  • Use stream for input and output when signing.
  • Various issues fixed.

GroupDocs.Comparison for .NET Library and Cloud App

  • Improved comparison of PDFs: switch layers off or on when performing vector-based comparison.
  • Improved detection of added or deleted text.
  • Improved performance.
  • Various bug fixes.

GroupDocs.Conversion for .NET Library and Cloud App

  • Improved performance (using streams for input and output).

GroupDocs Cloud App Platform

  • DWG file format support.
Coming Soon
GroupDocs.Viewer for .NET Library

  • Improved support for mobile devices.
  • Rendering links for email attachments.

GroupDocs.Annotation for .NET Library and Cloud App

  • Tool for underlining text.
  • Measurement tool (ruler).
  • Undo/redo feature.
  • Import/export comments to Microsoft Excel documents.

GroupDocs.Signature Cloud App

  • Tag envelopes, forms and templates to improve organization.

GroupDocs.Comparison for .NET Library and Cloud App

  • Detect moved text.
  • Improved detection of style changes.
  • Compare Microsoft Visio files.
  • Improved comparison of Microsoft PowerPoint files.
From The Library
Integrating GroupDocs.Viewer for Java into a PHP Application
If you are new to GroupDocs.Viewer for Java, and want to integrate it with a PHP web application, this article will have you up and running quickly. It describes what you need, and what you need to do, to add document viewing features to your app. Read the article.
GroupDocs.Viewer for .NET Extension for pimcore
pimcore is an open-source content management and e-commerce platform. We recently developed an extension that lets you add GroupDocs.Viewer for .NET to pimcore websites. Because the extension uses the .NET library and not the Cloud service, you can host it entirely on your own infrastructure. Find out more.
How Can We Help You?
Do you have ideas for what you'd like to see us do in the coming months? Take a minute to tell us.
Integrations and New Cloud API Samples
Product Releases And Updates
GroupDocs.Total for .NET – The latest release of our .NET libraries. GroupDocs.Viewer for Java 2.2.0 – Support for TIFF files and improved watermark handling.
GroupDocs.Viewer for .NET 2.1.2 – Maintenance release. GroupDocs.Annotation for Java 1.4.0 – Import comments and replies on point, area, text and polyline annotations.
GroupDocs.Annotation for .NET 1.3.0 – Various improvements to markup tools and other fixes and enhancements.

Seamlessly Integrate the GroupDocs.Viewer for Java Library into Your DNN Website

GroupDocs.Viewer for Java iconRecently we released a new module which allows developers to seamlessly integrate the Java version of our HTML5 document viewer into DNN websites. Today we're pleased to announce that the module has been approved and officially published on the DNN marketplace.

GroupDocs.Viewer for Java library is an HTML5 document that allows you to embed and display 50+ types of documents on any page within your website. Formats include PDF and Microsoft Word documents, Excel spreadsheets, PowerPoint slides, Visio diagrams and a lot more.

The Java version is the third DNN module we've released for the GroupDocs HTML5 document viewer. Now you can choose between 3 deployment options for the viewer: a downloadable .NET or Java library, which can be hosted on-premises, or a cloud-based on-demand service. For more details on the viewer and available deployment options, please see this page.

Also, please visit the official DNN store for more details on the modules and installation instructions:

> GroupDocs.Viewer for Java Module
> GroupDocs.Viewer for .NET Module
> GroupDocs.Viewer for Cloud Module

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