2025.1.205 (2025 Q1)

Updated on Jun 16, 2026

What Is Changed

• Starting with 2025 Q1, all users of the Telerik and Kendo UI components and tools need to apply a valid license key file to both new and existing projects. For details, see the Licensing Documentation.

What Is New

• Introduced support for Optical Character Recognition (OCR). This feature allows the conversion of images of typed, handwritten, or printed text into machine-encoded text from a scanned document.

  

• Remediated Security Vulnerability CVE-2024-11629. ^{.NET Standard}

• Remediated Security Vulnerability CVE-2024-11343.

DocumentProcessing

• OpenXML formats are susceptible to DoS attacks that pass through the timeout mechanism.

PdfProcessing

• Introduced support for Optical Character Recognition (OCR). This feature allows the conversion of images of typed, handwritten, or printed text into machine-encoded text from a scanned document.

• Introduced support for adding barcodes to a PDF document.

• Introduced option for setting height to table rows.

• Introduced API for optimization and reduction of the size of existing PDF files.

• Handled import of documents with missing MediaBox operator.

• Introduced support for import-export of XFA fields.

• Introduced support for Named actions.

• Introduced support for ResetForm action.

  

• SkiaImageFormatProvider: An AggregateException: 'The given key 'Abc.Visuals.IAbcStrokedRectangle' was not present in the dictionary' is thrown when exporting the pages with SkiaImageFormatProvider. ^{.NET Standard}

• SkiaImageFormatProvider: Signature omitted on export. ^{.NET Standard}

• SkiaImageFormatProvider: Missing elements on rendered image. ^{.NET Standard}

• SkiaImageFormatProvider: Export to image is slow and the consumed memory is huge. ^{.NET Standard}

• A NullReferenceException is thrown when importing a file with explicitly set UserInterfaceName annotation property to null.

• A NullReferenceException is thrown when importing a document and enumerating the pages.

• A NullReferenceException is thrown when cloning or merging documents containing a Link with Action collection.

• A NotSupportedException is thrown when parsing CFF Type1 font.

• A NotSupportedException is thrown when exporting an image with ICCBased color space and the default ImageCompression is changed.

• Some text is missing when the culture is German.

• A KeyNotFoundException is thrown when reading glyph data with Type1Font.

• A KeyNotFoundException is thrown when loading a document with unsupported annotation.

• An InvalidOperationException: 'Position is out of range.' is thrown while reading the font in the import process.

• An InvalidCastException is thrown when parsing the font for a specific document.

• An IndexOutOfRangeException is thrown when encoding an image with Grayscale color space.

• Images are inverted after export.

• ImageFormatProvider: System.AggregateException exception is thrown when exporting a document to an image. ^{.NET Standard}

• An error in Adobe when inspecting a page with DeviceGray ColorSpace image after import-export.

• An ArgumentNullException is thrown when importing a document with missing indirect reference object.

• An ArgumentException: 'Name cannot contain .(period).' when merging PDF files with form fields.

• SkiaImageFormatProvider: OverflowException is thrown when converting a document to an image. ^{.NET Standard}

• PdfStreamWriter: JavaScript actions are broken after merging documents.

• A NullReferenceException when Type1 font with random bytes count (lenIV) is set to 0.

• An InvalidCastException is thrown when importing a file with missing space.

• An InvalidCastException is thrown when importing a document with a missing state separator in the object stream.

• A NullReferenceException is thrown when importing a form XObject with null Resources in PDF dictionary.

SpreadProcessing

• The Export method does not respect the timeout parameter.
• A NullReferenceException is thrown when exporting a workbook with no sheets. A message indicating that a workbook must contain at least one visible sheet is now displayed.
• Name Conflict window is displayed when an XLS file is imported and then exported to XLSX.
• Export to PDF fails in single-threaded platforms. ^{.NET Standard}
• Duplicating a worksheet with the CopyFrom method does not copy the defined conditional formatting rules.
• An ArgumentNullException is thrown when importing a document containing a rule with no format set.