Completed
Last Updated: 04 Mar 2026 13:48 by ADMIN
Release 2026.1.304 (2026 Q1)
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)

With the current implementation, the compression setting is omitted:

  • streamWriter.Settings.StreamCompression
Completed
Last Updated: 04 Mar 2026 13:31 by ADMIN
Release 2026.1.304 (2026 Q1)
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)
When importing a document with many Path elements, the memory consumption could be very high.
Completed
Last Updated: 13 Feb 2026 09:39 by ADMIN
Release 2026.1.210 (2026 Q1)
Introduce support for TimeStampServer when using the PdfStreamSigner.
Completed
Last Updated: 13 Feb 2026 09:39 by ADMIN
Release 2026.1.210 (2026 Q1)
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)

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)
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)
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)

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
Last Updated: 21 Jan 2026 14:56 by ADMIN
Release 2025.4.1319 (2025 Q4)
Handle the import of documents with invalid offset and no space before dictionary keys.
Completed
Last Updated: 21 Jan 2026 14:56 by ADMIN
Release 2025.4.1319 (2025 Q4)
Created by: Jan
Comments: 0
Category: PdfProcessing
Type: Feature Request
3
Add support for Border annotation property.
Completed
Last Updated: 13 Feb 2026 09:39 by ADMIN
Release 2026.1.210 (2026 Q1)
SkiaImageFormatProvider: Blacked out images due to incorrectly resolved clipping.
Completed
Last Updated: 18 Dec 2025 10:14 by ADMIN
Handle the import of incrementally updated documents with invalid cross-reference offsets.
Completed
Last Updated: 26 Jan 2026 14:27 by ADMIN
Release 2025.4.1216 (2025 Q4)

When importing a large document (e.g. 2.3GB) , the library fails to parse int value that exceeds the limit which leads to endless importing:

Completed
Last Updated: 21 Jan 2026 14:56 by ADMIN
Release 2025.4.1319 (2025 Q4)
Handle the import of documents with a negative cross-reference stream offset.
Completed
Last Updated: 26 Jan 2026 14:27 by ADMIN
Release 2025.4.1216 (2025 Q4)

During export operation of a document that contains signature fields the following error occurs: 

System.InvalidOperationException: 'The signature was not properly initialized for external signing. The signing delegate is missing.'
Completed
Last Updated: 21 Jan 2026 14:56 by ADMIN
Release 2025.4.1319 (2025 Q4)

Setting the ComplianceLevel to PdfA3B and the TaggingStrategy to UseExisting when exporting a PDF document leads to the following Error reported by VeraPdf:

Specification: ISO 19005-3:2012, Clause: 6.2.11.5, Test number: 1
For every font embedded in a conforming file and used for rendering, the glyph width information in the font dictionary and in the embedded font program shall be consistent.
Glyph width 274.4140625 in the embedded font program is not consistent with the Widths entry of the font dictionary (value 272)
Completed
Last Updated: 26 Jan 2026 14:27 by ADMIN
Release 2025.4.1216 (2025 Q4)

Resaving a document with Acrobat throws an error due to invalid Info dictionary in document trailer.

Completed
Last Updated: 21 Jan 2026 14:56 by ADMIN
Release 2025.4.1319 (2025 Q4)

You need to explicitly set the correct MIME type when embedding the file into the PDF. This is especially important for standards like PDF/A-3 and Factur-X, which require strict metadata and MIME type declarations for embedded files.

The default value /application/octet-stream is too generic and not compliant for XML attachments.

 

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