Release History

Progress® Telerik® Reporting 2026 Q3 (20.2.26.1007)

October 8, 2026

Visual Studio Report Designer for .NET (preview)

NEW

• We are excited to introduce the preview release of one of the most anticipated Telerik Reporting features! The new Visual Studio Report Designer provides nearly all the functionality required to create, edit, and preview reports in .NET 8+ projects. As this is a preview release, we encourage you to try it out and share your feedback as we continue refining the experience toward general availability. See the documentation for installation and setup instructions

Faster document generation with reduced memory usage

NEW

• Telerik Reporting now delivers improved memory efficiency and faster report document generation, especially for reports with complex layouts and large data sets

Localization support for report content in the Web Report Designer

NEW

• The Web Report Designer now supports localized report content for multilingual audiences. Report authors can define and edit language-specific strings, switch the active language safely, and preview localized reports directly in the designer. Read more here.

Configurable export options in Telerik web report viewers

NEW

• Web report viewers now expose export format options so users can configure supported output settings before exporting. The options are supplied consistently by the Reporting REST service and are available in the supported web viewers and Report Server integrations. Read more here.

Public schema and validation SDK for Telerik Reporting report definitions

NEW

• Telerik Reporting now provides a public report definition schema, validation SDK, and command-line tooling. The schema enables AI-generated report definitions, while the SDK allows developers to validate them in applications and CI pipelines before deployment. Read more here.

Command-line project templates for Telerik Reporting web viewers and designer

NEW

• Telerik Reporting now provides command-line project templates for the HTML5 Report Viewer, Native Angular Report Viewer, Native Blazor Report Viewer, and Web Report Designer. Developers can start common Reporting projects from the terminal with less setup. Read more here.

What's Improved

NEW

• Reports containing Table and Crosstab items now process faster while using less memory.
• Telerik web report viewers now use Kendo SVG icons for improved rendering and customization.
• PDF documents can now be rendered with font kerning applied by enabling the "ApplyKerning" export option. Read more here.
• The Reporting engine now parses HtmlTextBox content faster.
• The Reporting engine now renders reports with nested groups and page breaks faster.
• PictureBox alternative text can now be included while other report items are excluded from accessible PDF output.
• Declarative TRDX and TRDP report definitions now support the "Error" event.
• The TableGroup.GroupKeepTogether property now keeps group headers with their first data row.
• PictureBox now uses image rotation metadata to display images in the correct orientation. Read more here.
• Report authors can now exclude individual report items from accessible documents. Read more here.

What's Changed

CHANGED

• The TableGroup.GroupKeepTogether property now uses the GroupKeepTogether enum instead of a Boolean value.
• CSV export now excludes hidden report items by default unless "RespectItemVisibility" is disabled. Read more here.

Standalone Report Designer

FIXED

• The "Expression Editor" inserts an incorrect field expression for nested DateTime members when connected to Report Server.
• CsvDataSource header names do not update when "The CSV has headers" is toggled.

Web Designer

FIXED

• The PictureBox sizing settings are ignored when its contents are rendered on the design surface.
• HtmlTextBox indentation from the "Indent" button is applied twice and saved as encoded text.
• The Table of Contents "Title" property does not update immediately after editing.
• The Query Builder relationship editor displays a white "Edit" button.
• Chart wizard controls are not labeled for assistive technologies.
• The data-field menu does not open near the top edge of the table wizard.
• Content in the PictureBox "Value" property editor is misaligned.

Installation

FIXED

• The Telerik Reporting installer adds the legacy ASP.NET WebForms Report Viewer assembly to the Global Assembly Cache (GAC).

Paging

FIXED

• The "Index was outside the bounds of the array" error occurs in the WinUI Report Viewer when changing pages or view mode.
• Repeatable table group headers and footers do not render for nested items.

Rendering

FIXED

• Text in Indian scripts is rendered incorrectly in image and PDF output when using the Skia graphics engine.

CSV Rendering

FIXED

• Tables in "Report Header" and "Report Footer" sections are missing.

Common

FIXED

• Table of Contents titles cannot be localized in report definitions.

Report Viewers

FIXED

• Graph legends and labels are corrupted when reports use the ar-SA culture.

HTML5 Report Viewer

FIXED

• Form controls are missing accessible labels for screen readers.

React Report Viewer

FIXED

• Missing source-map warnings are shown in Webpack-based projects.

Visual Studio Item Templates

FIXED

• The Web Report Designer "Explorer" tree is not indented when created from a Visual Studio item template.

Product Dependencies