Telerik Document Processing Feedback Portal

Unplanned

Last Updated: 12 Mar 2026 07:03 by Siva

PdfProcessing: InvalidCastException when importing a document

Created by: Siva

Comments: 0

Category: PdfProcessing

Type: Bug Report

PdfProcessing: InvalidCastException when importing a document

System.InvalidCastException: 'Unable to cast object of type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.PdfStream' to type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.MarkedContents.ReferencedObject'.'

Unplanned

Last Updated: 11 Mar 2026 06:22 by Foxy

PdfProcessing: PdfStreamWriter: Merging PDF documents causes blank pages

Created by: Foxy

Comments: 0

Category: PdfProcessing

Type: Bug Report

PdfProcessing: PdfStreamWriter: Merging PDF documents causes blank pages

After merging several PDF documents, some pages are blank indicating the following error:

Unplanned

Last Updated: 10 Mar 2026 11:37 by Benjamin

PdfProcessing: Factur-X invoice (XML file) not embedded correctly in PDF according to Super PDP validator

Created by: Benjamin

Comments: 0

Category: PdfProcessing

Type: Bug Report

PdfProcessing: Factur-X invoice (XML file) not embedded correctly in PDF according to Super PDP validator

When using Telerik Document Processing (PdfProcessing) for embedding Factur-X invoices, the produced PDF document is Non‑compliant with PDF-AF / Factur‑X according to the following validator:

https://www.superpdp.tech/outils/validateur-facture-electronique/

In Development

Last Updated: 10 Mar 2026 19:03 by ADMIN

WordsProcessing: PdfFormatProvider: Justified text alignment is not respected for specific text content

Created by: Ryan

Comments: 0

Category: PdfProcessing

Type: Bug Report

WordsProcessing: PdfFormatProvider: Justified text alignment is not respected for specific text content

PdfFormatProvider: Justified text alignment is not respected for specific text content.

In Development

Last Updated: 10 Mar 2026 14:05 by ADMIN

PdfProcessing: Expose internal GrayColor object

Created by: Mario

Comments: 0

Category: PdfProcessing

Type: Feature Request

PdfProcessing: Expose internal GrayColor object

Expose internal GrayColor object.

Completed

Last Updated: 04 Mar 2026 13:48 by ADMIN

Release 2026.1.304 (2026 Q1)

ADMIN

PdfProcessing: StackOverflowException is thrown with a specific document containing StructureTree

Created by: Martin

Comments: 0

Category: PdfProcessing

Type: Bug Report

PdfProcessing: StackOverflowException is thrown with a specific document containing StructureTree

The issue is that the document contains incorrect data that the CrossReferenceStream.LoadReferences method cannot parse.

Completed

Last Updated: 04 Mar 2026 13:48 by ADMIN

Release 2026.1.304 (2026 Q1)

ADMIN

PdfProcessing: PdfStreamWriter: Apply encoding filter from StreamCompression setting when exporting XObject

Created by: Martin

Comments: 0

Category: PdfProcessing

Type: Feature Request

PdfProcessing: PdfStreamWriter: Apply encoding filter from StreamCompression setting when exporting XObject

With the current implementation, the compression setting is omitted:

streamWriter.Settings.StreamCompression

Unplanned

Last Updated: 12 Feb 2026 10:45 by Rob

PdfProcessing: Add support for PDF Portfolios

Created by: Rob

Comments: 0

Category: PdfProcessing

Type: Feature Request

PdfProcessing: Add support for PDF Portfolios

Add support for PDF Portfolios.

Unplanned

Last Updated: 10 Feb 2026 07:27 by Devron

PdfProcessing: .NET Standard: ArgumentOutOfRangeException: 'Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')' during import

Created by: Devron

Comments: 0

Category: PdfProcessing

Type: Bug Report

PdfProcessing: .NET Standard: ArgumentOutOfRangeException: 'Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')' during import

This exception was originally thrown at this call stack:
System.ThrowHelper.ThrowArgumentOutOfRange_IndexMustBeLessException()
System.Collections.Generic.List<T>.this[int].get(int)
Telerik.Windows.Documents.Core.PostScript.Data.PostScriptArray.GetElementAs<T>(int)
Telerik.Windows.Documents.Core.Fonts.Type1.Type1Format.Dictionaries.Type1PostScriptObject.GetGlyphName(ushort)
Telerik.Windows.Documents.Core.Fonts.Type1.Type1Format.Type1FontSource.GetGlyphName(ushort)
Telerik.Windows.Documents.Core.Fonts.Type1.Type1Format.Type1FontSource.GetAdvancedWidthOverride(int)
Telerik.Windows.Documents.Core.Fonts.FontSource.GetAdvancedWidth(int)
Telerik.Windows.Documents.Fixed.Model.Fonts.StandardFont.GetActualWidth(Telerik.Windows.Documents.Fixed.Model.Data.CharCode)
Telerik.Windows.Documents.Fixed.Model.Fonts.SimpleFont.GetWidthOverride(Telerik.Windows.Documents.Fixed.Model.Data.CharCode)
Telerik.Windows.Documents.Fixed.Model.Fonts.FontBase.GetWidth(Telerik.Windows.Documents.Fixed.Model.Data.CharCode)

Completed

Last Updated: 04 Mar 2026 13:31 by ADMIN

Release 2026.1.304 (2026 Q1)

PdfProcessing: ArgumentNullException: 'Value cannot be null. (Parameter 'source')' when importing a document which structure tree contains null or empty child elements

Created by: Bhaskar

Comments: 0

Category: PdfProcessing

Type: Bug Report

PdfProcessing: ArgumentNullException: 'Value cannot be null. (Parameter 'source')' when importing a document which structure tree contains null or empty child elements

Stacktrace:

   at System.Linq.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
   at System.Linq.Enumerable.Cast[TResult](IEnumerable source)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.MarkedContents.StructElementObject.CopyPropertiesTo(PostScriptReader reader, StructureElementsImportContext context, StructureElement element)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.MarkedContents.StructElementObject.CopyPropertiesTo(PostScriptReader reader, StructureElementsImportContext context, StructureElement element)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.MarkedContents.StructElementObject.CopyPropertiesTo(PostScriptReader reader, StructureElementsImportContext context, StructureElement element)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.MarkedContents.StructTreeChildrenObject.CopyPropertiesTo(PostScriptReader reader, StructureElementsImportContext context, StructureElementsCollection childElements)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.MarkedContents.StructTreeRootObject.CopyPropertiesTo(PostScriptReader reader, StructureElementsImportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.DocumentStructure.DocumentCatalog.CopyStructureTreeTo(PostScriptReader reader, IRadFixedDocumentImportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.DocumentStructure.DocumentCatalog.CopyPropertiesTo(PostScriptReader reader, IRadFixedDocumentImportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Import.RadFixedDocumentImportContext.BeginImportOverride()
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Import.BaseImportContext.BeginImport(Stream pdfFileStream)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Import.PdfImporter.Import(Stream input, IPdfImportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider.<>c__DisplayClass19_0.<ImportOverride>b__0()
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.ExceptionHandling.ExecutionHandler.TryHandleExecution[E](Action operation)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider.ImportOverride(Stream input, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Common.FormatProviders.FormatProviderBase`1.Import(Stream input, Nullable`1 timeout)

Completed

Last Updated: 04 Mar 2026 13:48 by ADMIN

Release 2026.1.304 (2026 Q1)

PdfProcessing: High memory consumption when importing a document with many Path/Image elements

Created by: Mattia

Comments: 0

Category: PdfProcessing

Type: Bug Report

PdfProcessing: High memory consumption when importing a document with many Path/Image elements

When importing a document with many Path elements, the memory consumption could be very high.

Unplanned

Last Updated: 29 Jan 2026 08:03 by Janson

PdfProcessing: Provide support for signing multiple Signature fields

Created by: Janson

Comments: 0

Category: PdfProcessing

Type: Feature Request

PdfProcessing: Provide support for signing multiple Signature fields

When signing more than one signature field, the previous signatures are invalidated.

Completed

Last Updated: 13 Feb 2026 09:39 by ADMIN

Release 2026.1.210 (2026 Q1)

PdfProcessing: PdfStreamSigner: Introduce TimeStamp server support.

Created by: Janson

Comments: 0

Category: PdfProcessing

Type: Feature Request

PdfProcessing: PdfStreamSigner: Introduce TimeStamp server support.

Introduce support for TimeStampServer when using the PdfStreamSigner.

Completed

Last Updated: 13 Feb 2026 09:39 by ADMIN

Release 2026.1.210 (2026 Q1)

PdfProcessing: CryptographicException is thrown when importing AES encrypted document with DocumentInfo

Created by: Jeff

Comments: 2

Category: PdfProcessing

Type: Bug Report

PdfProcessing: CryptographicException is thrown when importing AES encrypted document with DocumentInfo

CryptographicException is thrown when importing AES encrypted document with DocumentInfo.

Completed

Last Updated: 13 Feb 2026 09:39 by ADMIN

Release 2026.1.210 (2026 Q1)

ADMIN

PdfProcessing: Incorrect annotation border array is rendered instead of being skipped

Created by: Martin

Comments: 0

Category: PdfProcessing

Type: Bug Report

PdfProcessing: Incorrect annotation border array is rendered instead of being skipped

The unexpected border array:

14 0 obj
<< /A 16 0 R /Border [ 10 10 10 60 ] /Rect [ 411 36 565 48 ] /Subtype /Link /Type /Annot >>
endobj

According to the PDF Specification:

"In PDF 1.0, the array consists of three numbers defining the horizontal corner radius, vertical corner radius, and border width, all in default user space units. If the corner radii are 0, the border has square (not rounded) corners; if the border width is 0, no border is drawn. (See implementation note 81 in Appendix H.)

In PDF 1.1, the array may have a fourth element, an optional dash arraydefining a pattern of dashes and gaps to be used in drawing the border."

Completed

Last Updated: 13 Feb 2026 09:39 by ADMIN

Release 2026.1.210 (2026 Q1)

PdfProcessing: InvalidOperationException is thrown when parser incorrectly interprets delimiter characters within literal strings as structural tokens instead of string data

Created by: David

Comments: 0

Category: PdfProcessing

Type: Bug Report

PdfProcessing: InvalidOperationException is thrown when parser incorrectly interprets delimiter characters within literal strings as structural tokens instead of string data

InvalidOperationException is thrown when the parser incorrectly interprets delimiter characters within literal strings as structural tokens instead of string data.

Completed

Last Updated: 21 Jan 2026 14:56 by ADMIN

Release 2025.4.1319 (2025 Q4)

ADMIN

PdfProcessing: Some characters are not properly resolved from the Encoding differences table

Created by: Martin

Comments: 0

Category: PdfProcessing

Type: Bug Report

PdfProcessing: Some characters are not properly resolved from the Encoding differences table

Specific characters (" ' ") are not properly resolved from the Encoding differences table.

Completed

Last Updated: 21 Jan 2026 14:56 by ADMIN

Release 2025.4.1319 (2025 Q4)

PdfProcessing: PdfFormatProvider: InvalidOperationException: 'isContentReleased' when exporting

Created by: Muhammad

Comments: 0

Category: PdfProcessing

Type: Bug Report

PdfProcessing: PdfFormatProvider: InvalidOperationException: 'isContentReleased' when exporting

Introduced in version 2025.4.1104.

Works OK in the previous version.

StackTrace:

   at Telerik.Windows.Documents.Utilities.Guard.ThrowExceptionIfTrue(Boolean condition, String message)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.IndirectObject.get_Content()
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.PdfExportContext.BeginExportIndirectObject(IndirectObject indirectObject, Int64 offset)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.IndirectObject.Write(PdfWriter writer, IPdfExportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.PdfExporter.WritePendingIndirectObjects(IPdfExportContext context, PdfWriter writer)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.PdfExporter.WriteFontsFromContext(PdfWriter writer, IPdfExportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.PdfExporter.Export(IRadFixedDocumentExportContext context, Stream output)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider.<>c__DisplayClass21_0.<ExportOverride>b__0()
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.ExceptionHandling.ExecutionHandler.TryHandleExecution[E](Action operation)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider.ExportOverride(RadFixedDocument document, Stream output, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Common.FormatProviders.FormatProviderBase`1.Export(T document, Stream output, Nullable`1 timeout)

Completed