Aspose.Words for .NET 19.12 released

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This month much attention was paid to fix as many issues as possible. As a result, 95 improvements and fixes (including 8 Enterprise Support and 14 Priority Support issues among them) were included to this regular monthly release. Totally 148 issues have been processed.

A big milestone has been reached by our Rendering Team – conversion to PDF 1.7 standard is now supported and has become the main (default) format for output PDF files. In the future, it should allow embedding OpenType fonts into PDF.

The Model/Conversions Team has delivered a few new features:

  • User-installed fonts are now supported by using SystemFontSource on Windows10.
  • New properties of Bookmark have been made public.
  • OLE object data is exposed to public API.
  • Added ability to save images as WMF upon converting to RTF.

Aspose.Words .NET/Layout team reported that kerning feature finally works on Java platform, also some fixes related to paragraph rules and footnote balancing were accomplished.

Access to related DataTable using relation name for LINQ Reporting Engine is now supported in Aspose.Words for Reporting Engines.

SkiaSharp was updated to the latest stable version – you will enjoy the high quality of rendered output on .NET Standard, Android, MAC and iOS platforms.

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Important Bug Fixes in GroupDocs.Viewer for .NET 19.11

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We have rolled out another update for GroupDocs.Viewer for .NET featuring some important bug fixes as well as an improvement related to the MSI package. This release hasn’t brought any new feature, still, it has addressed some important issues related to PDF, DWG and ODG file formats. Furthermore, a few compatibility issues which appeared under .NET Standard 2.0 have been resolved. So let’s have a brief overview of the bug fixes and improvements we have introduced in v19.11.

Issue: Rendering DWG to image (PNG/JPG) or PDF resulted in an empty output

This issue appeared for some specific DWG files when the contents of the source files were missing in the output and it resulted in blank/empty images or PDF documents.

Issue: The code hangs when rendering PDF document to HTML

One of our customers faced an issue where the API was taking too long to render a particular PDF document into HTML. We have resolved this issue and improved the performance of the API when rendering such PDF documents.

Issue: Console output is printed when rendering ODG images

In the previous versions, the unnecessary messages were printed in the console window while rendering the ODG images. Although it wasn’t affecting API’s functionality or the output, it might have created confusion for the developers. We have fixed this issue to prevent unexpected messages to be printed in the console window.

Issue: Compatibility issues under .NET Standard 2.0

In the previous release, we added the support of .NET Standard 2.0 for cross-platform development using GroupDocs.Viewer for .NET. This enhancement raised some internal compatibility issues, however, we have fixed these issues in v19.11.

Improvement: New ProjectGuid and UpgradeCode for MSI package

We have updated the unique identifier that is used by OS to identify the application installed with an MSI package. This update would require you to manually uninstall the previous version of GropuDocs.Viewer for .NET before installing v19.11 using the MSI package.

Since the updates are always important, we would recommend you to upgrade to v19.11 in your applications. In case you would face any issue or have any confusion, feel free to share with us via our forum.

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Posted in Conholdate.Total Product Family, CAD viewer, Excel viewer, GroupDocs.Viewer Product Family, GroupDocs.Viewer for .NET Releases, Word Viewer, autocad viewer, document viewer, dwg or dfx viewer, html5 document viewer, visio viewer, vsdx viewer, web document viewer | Tagged , , , , , , , , , , , | Leave a comment

Classify text using IAB-2 or Document taxonomies in C#

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A taxonomy or classification is basically an approach in which text is systematically identified and then organized. When you are dealing with a bunch of data (text based or documents), it becomes hard to find a topic of your need until and unless this data is classified or organized. Hence, you have to classify text in order to fetch data/information quickly.

GroupDocs.Classification for .NET

GroupDocs offers a programmable document or text classification API for .NET developers. You just have to add a single DLL (GroupDocs.Classification for .NET) as a reference in your .NET project. API allows developers to use two different taxonomies: IAB-2 (Interactive Advertising Bureau) and documents taxonomy.

IAB-2 text classification

IAB-2 categories texts into multiple topics and then identifies text based on the depth level. Call Classify method with a text as parameter to perform classification.

This text will be classified as Healthy_Living (IAB-2). Some more examples:

  • Sooner or later technology will overcome labor work – Technology_&_Computing (IAB-2)
  • This game has better graphics on Xiaomi Note 8 pro mobile – Video_Gaming (IAB-2)
  • We need groceries for the next month – Shopping (IAB-2)

Document taxonomy

Documents taxonomy is used to identify different document classes, such as Invoices, CVs, Forms, emails. Call Classify method for “document.pdf” file in the current directory with IAB-2 taxonomy and return 2 best results.

Call Classify method for “document.doc” file with Documents taxonomy, set precision/recall balance to “Precision” and return 4 best results.

API also facilitates classification of password-protected documents.

Below are some helpful resource for you

We’d recommend you to explore these resources, evaluate API and if there is any issue, you can raise it on forum.

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View Contents of ZIP and TAR Archives using GroupDocs.Viewer for Java 19.11

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Java ZIP TAR Viewer

We are excited to bring a major release of GroupDocs.Viewer for Java API packaging a bunch of new features, improvements, and bug fixes. In the latest release, we have added the support of viewing archives and a couple of code files as well as provided the features of working with security settings in the PDF documents. So let’s walk through the latest release of our document viewer API for Java and check out what you are going to get after upgrading to v19.11.

View ZIP and TAR Archives

The first and foremost feature of v19.11 is viewing the list of files and folders in the ZIP and TAR archives. This feature is quite handy when you want to view the list of the contents without extracting the archives.

ZIP file is used to encase multiple files or folders as a single package that is further compressed to reduce the file size. Similarly, TAR is a Unix File Archive format used to archive the files and folders. In general, both ZIP and TAR are categorized as compression file formats.

In the following sections, you will see how to view a list of contents from the ZIP or TAR archives without extracting.

View List of Contents in ZIP or TAR Archives

When rendering an archive file as HTML, GroupDocs.Viewer returns an HTML page containing the list of items that are at the root of the archive. In the case of rendering as image or PDF, the API returns one or more pages depending on the number of items. The following code sample demonstrates this feature.

View List of Folders from ZIP or TAR

ZIP or TAR archives may contain multiple files and folders. These folders may further contain files as well as subfolders. GroupDocs.Viewer also allows viewing the folders that are located at the root of the archive. The following code sample shows how to get a list of folders from a ZIP or TAR archive.

View List of Subfolders within a Certain Folder of ZIP or TAR

There might be the case when you need to obtain the list of subfolders within a root folder in the ZIP or TAR archive. For such a case, you can specify the folder name using ArchiveOptions.setFolderName(“FolderName”) and the API will return the list of subfolders.

View List of Files within a Folder in ZIP or TAR

Now, once you have got the list of folders (and the subfolders as well), you can extract and view the items from your desired folder. The following code sample shows how to view the items of a specific folder in a ZIP or TAR.

For more details on rendering archives, please visit working with archives.

Working with Security Settings in PDF Documents

The PDF documents allow setting security parameters to restrict unauthorized access. The security can be enabled using:

  • Owner password – The password which is required to change document permissions.
  • User password – The password required to open the document.
  • PDF file permissions – The permissions to allow or deny printing, modification and data extraction.

In the latest release, we have added the feature of setting the above-mentioned security settings when rendering a file into a PDF document. The following code sample shows how to set the owner password, user password, and the permissions to deny the printing.

Detecting Security Settings in PDF Document

You can also check the security settings that are applied to a particular PDF document. For example, you can check if printing of the document is allowed or not as shown in the following code sample.

Support for Viewing Code Files

In addition to the support of ZIP and TAR files, we have also added the feature of viewing C# (.cs) and Visual Basic (.vb) code files.

Bug Fixes

The following is the list of bugs that are fixed in v19.11.

  • Output extension is empty when saving HTML page into cache
  • Object null reference exception when rendering DWG document
  • The Watermark opacity is set twice when rendering as HTML
  • The separator is wrong for the opacity value
  • File is corrupted or damaged exception for presentation documents
  • Unable to render .xls file with exception “file is corrupted or damaged”


We have made the following improvements in v19.11.

  • Improved performance for rendering PSD image format into PDF
  • Improved rendering Dicom, Dng and WebP formats into PDF
  • Extended support for CellsOptions.setTextOverflowMode option for rendering the document into image
  • Extended support for CellsOptions.setTextOverflowMode option for rendering into PDF
  • Rendering contact photo from vCard file format (VCF)
  • Improve output for rendering zip archives

Well, this was a brief overview of the major features as well as improvements and bug fixes. You can also visit the release notes of GroupDocs.Viewer for Java 19.11 to know about the public API changes. Visit the documentation of GroupDocs.Viewer for Java for more details and code samples of every feature. You can download/clone the source code examples from the GitHub repository.

In case you find any issue while using our API, we are always available to provide you free support on our forum.

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