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Unplanned
Last Updated: 27 Mar 2026 14:04 by Benjamin
PdfProcessing: Add support for PDF/A-4F compliance level
Created by: Benjamin
Comments: 0
Category: PdfProcessing
Type: Feature Request
1
PdfProcessing: Add support for PDF/A-4F compliance level

https://loc.gov/preservation/digital/formats/fdd/fdd000532.shtml

PDF/A‑4f is a version of PDF/A designed for archival storage that:

  • Ensures long‑term visual and structural preservation
  • Is based on modern PDF 2.0
  • Allows embedded files (attachments) that are also archival‑compliant 

 

Unplanned
Last Updated: 24 Mar 2026 09:03 by Simon
PdfProcessing: XMP write support for core properties
Created by: Simon
Comments: 0
Category: PdfProcessing
Type: Feature Request
2
PdfProcessing: XMP write support for core properties
Add Write/Export support for XMP core properties. This includes the following steps:

Make Schema Properties Mutable
Implement Schema Serialization Methods
Extend XMP Writer for Serialization
Integrate XMP Writer with Document Export
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
4
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)
PdfProcessing: High memory consumption when importing a document with many Path/Image elements
Created by: Mattia
Comments: 0
Category: PdfProcessing
Type: Bug Report
2
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.
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
1
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
1
PdfProcessing: PdfStreamWriter: Apply encoding filter from StreamCompression setting when exporting XObject

With the current implementation, the compression setting is omitted:

  • streamWriter.Settings.StreamCompression
Completed
Last Updated: 04 Mar 2026 13:39 by ADMIN
Release 2026.1.304 (2026 Q1)
PdfViewer: System.ArgumentException: 'Operator not found'
Created by: Graham
Comments: 0
Category: PdfProcessing
Type: Bug Report
1
PdfViewer: System.ArgumentException: 'Operator not found'

As a result of the below missing operator, some of the glyphs can't be extracted from the CFFFontTable and the characters are not displayed in the PdfViewer:

The end user result is missing letter from the PDF content.

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
1
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)
Duplicated
Last Updated: 17 Feb 2026 12:34 by ADMIN
PdfProcessing: Handle importing documents with corrupted href tableand wrong objects' offset
Created by: Eli
Comments: 0
Category: PdfProcessing
Type: Feature Request
0
PdfProcessing: Handle importing documents with corrupted href tableand wrong objects' offset

Such a document can be considered invalid. However, it would be good to provide functionality to handle it.

Update: After reviewing the case, we concluded that the issue is caused by the document being linearized. Therefore, this item is being marked as a duplicate. Please follow the related public item to receive notifications about future status updates.

 

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
0
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: 13 Feb 2026 09:39 by ADMIN
Release 2026.1.210 (2026 Q1)
PdfProcessing: Failing to load an image prevents PDF Document to load properly
Created by: Manisai
Comments: 0
Category: PdfProcessing
Type: Bug Report
1
PdfProcessing: Failing to load an image prevents PDF Document to load properly
If the document contains an image that fails to be imported properly, an internal error occurs and the import process is interrupted leading to incomplete document with missing elements. 
Completed
Last Updated: 13 Feb 2026 09:39 by ADMIN
Release 2026.1.210 (2026 Q1)
PdfProcessing: Wrong transformation of glyph data
Created by: Desislava
Comments: 0
Category: PdfProcessing
Type: Bug Report
0
PdfProcessing: Wrong transformation of glyph data
It seems there is an issue when transforming the position of the original glyph data
Completed
Last Updated: 13 Feb 2026 09:39 by ADMIN
Release 2026.1.210 (2026 Q1)
PdfProcessing: SkiaImageFormatProvider: Blacked out images due to incorrectly resolved clipping
Created by: Vitalii
Comments: 0
Category: PdfProcessing
Type: Bug Report
9
PdfProcessing: SkiaImageFormatProvider: Blacked out images due to incorrectly resolved clipping
SkiaImageFormatProvider: Blacked out images due to incorrectly resolved clipping.
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
1
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)
ADMIN
PdfProcessing: Incorrect annotation border array is rendered instead of being skipped
Created by: Martin
Comments: 0
Category: PdfProcessing
Type: Bug Report
0
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: CryptographicException is thrown when importing AES encrypted document with DocumentInfo
Created by: Jeff
Comments: 2
Category: PdfProcessing
Type: Bug Report
2
PdfProcessing: CryptographicException is thrown when importing AES encrypted document with DocumentInfo
CryptographicException is thrown when importing AES encrypted document with DocumentInfo.
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
1
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)
Unplanned
Last Updated: 26 Jan 2026 14:46 by ADMIN
PdfProcessing: SearchResult's GetWordBoundingRect returns the Rect of only the first word of the whole match
Created by: Brian
Comments: 0
Category: PdfProcessing
Type: Bug Report
2
PdfProcessing: SearchResult's GetWordBoundingRect returns the Rect of only the first word of the whole match
SearchResult's GetWordBoundingRect returns the Rect of only the first word of the whole match.
Completed
Last Updated: 26 Jan 2026 14:45 by ADMIN
Release 2024.4.1106 Q4 2024
ADMIN
PdfProcessing: Wrong inheritance of Alpha constants when Form contains Path leads to incorrect transparency of objects
Created by: Martin
Comments: 0
Category: PdfProcessing
Type: Bug Report
0
PdfProcessing: Wrong inheritance of Alpha constants when Form contains Path leads to incorrect transparency of objects
When a Form with AlphaConstant and/or StrokeConstant contains a Path, alpha is applied to Form and Path, leading to a wrong transparency.
Completed
Last Updated: 26 Jan 2026 14:39 by ADMIN
Release 2024.4.1106 Q4 2024
PdfProcessing: StackOverflowException is thrown when applying filter for SVG
Created by: Oliver
Comments: 0
Category: PdfProcessing
Type: Bug Report
1
PdfProcessing: StackOverflowException is thrown when applying filter for SVG
StackOverflowException is thrown when applying filter for SVG.
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