Release History

Progress® Telerik® Reporting 2026 Q3 (20.2.26.812)

August 12, 2026

AI Report Generator: Table and Crosstab Support in the Web Report Designer

NEW

• The AI Report Generator in the Web Report Designer can now create and edit Table, Crosstab, and List items from a plain-language description — automatically wiring up groups, aggregates, and layout. An inline "Undo Changes" option lets you revert the AI's changes with a single click. Read more here, or try it here.

Kendo theming compatibility and custom themes support in Web Report Designer

NEW

• The Web Report Designer now supports native Kendo UI theming, including custom themes created with ThemeBuilder. Applications built on Kendo UI can apply their existing theme to the designer, giving a consistent look across the app and the reporting experience. Read more here.

JSON Report Definition Format for Reports

NEW

• Telerik Reporting now supports a new JSON-based report definition file format alongside the existing XML formats. It's easy to read and edit by hand or with AI coding assistants, produces clean version-control diffs, and can be validated in CI pipelines using a published JSON Schema. Read more here.

Reporting NuGet packages are now published to the public NuGet Gallery

NEW

• Telerik Reporting NuGet packages are now available on the public NuGet Gallery (nuget.org), in addition to the Telerik private feed. This makes it easier to reference and restore Reporting packages in projects and CI pipelines that use the public gallery by default. Read more here.

Reporting now supports Aztec barcode encoding and rendering

NEW

• Telerik Reporting now supports Aztec barcode encoding and rendering, adding another 2D barcode symbology you can use in your reports. Read more here.

What's Improved

NEW

• Excel document generation is now faster, thanks to optimized internal data structures.
• Collection Editors in desktop report designers now provide copy-paste functionality for their contents.
• The Standalone Report Designer now uses Unicode-aware (UAX#29) word selection when double-clicking in text fields.
• The Web Report Designer now allows copying the sample snippets shown for functions.
• RedisStorage now accepts the IConnectionMultiplexer interface for easier dependency injection and unit testing.
• The HTML5 Report Viewer's Report Preview Insights prompt now supports voice input via a microphone button.
• The Standalone Report Designer now supports rearranging opened report tabs by dragging them.
• Standalone Report Designer for .NET now renders report previews with vector graphics for higher quality when using the Skia engine.
• The Logarithmic scale of the Graph item now provides MajorStep and LabelStep properties for improved customization and readability.

XML Configuration

FIXED

• An assembly with a partial 'version' value is rejected as untrusted in the 'assemblyReferences' element.

Crystal Reports Converter

FIXED

• Parameter Fields are not converted to Report Parameters.
• Suppression formulas are not converted to a visibility expression.

Standalone Report Designer

FIXED

• The Import Code File Wizard shows a warning when using a non-English locale despite build succeeding.
• Double-clicking a word in the expression editor does not select the correct word boundaries.

Standalone Report Designer for .NET 8 and above

FIXED

• Coded reports fail to load assemblies when built from an ASP.NET Core web project.

Web Designer

FIXED

• A 404 console error occurs for a missing jQuery.UI icon.
• Font icons CSS is incompatible with the latest @progress/kendo-font-icons version.
• The WebServiceDataSource authentication selector fails to render when using non-English string resources.

Deployment

FIXED

• The source code distributed to clients is not buildable out-of-the-box.

Installation

FIXED

• An incorrect version of the Telerik.Windows assemblies is included in the Telerik Reporting 2026 Q2 installation.

Processing

FIXED

• A serialization exception is thrown when setting the NoDataStyle BackgroundImage of data items and PictureBox.
• HtmlTextBox does not preserve non-breaking space behavior between sibling inline elements.

Rendering

FIXED

• Graph labels and legends are not aligned when using the Skia rendering engine.

PDF Rendering

FIXED

• PDF export can incorrectly merge or duplicate distinct images that share pixel dimensions and similar content.

Word Rendering

FIXED

• A bullet list item that spans two pages gets a duplicate bullet.
• A numbered list that spans two pages restarts numbering at (1).

Native Angular Report Viewer

FIXED

• The Navigate Backward button becomes enabled after clicking Refresh on a report with DateTime parameters, despite no navigation occurring.
• Report history navigation fails when going back more than one step.

React Report Viewer

FIXED

• External command buttons throw a TypeError.

Windows Forms Report Viewer

FIXED

• A gray area and "Preview" button are shown when ReportSource is null.

Product Dependencies