Completed
Last Updated: 12 Nov 2025 11:41 by ADMIN
Release 2025.4.1104 (2025 Q4)
The issue may be reproduced by opening the attached PDF in Adobe Reader. Although the viewer initially shows the characters correctly, when you start typing in the TextBox, the umlaut/diacritics characters get corrupted. In other PDF viewers, the umlaut characters are handled correctly, so the issue seems to related to concrete Adobe Reader encoding handling implementation. The diacritic characters are handled incorrectly in other viewers as well (e.g. Chrome).
Completed
Last Updated: 30 Mar 2020 06:39 by ADMIN
Release R2 2020
ADMIN
Created by: Polya
Comments: 4
Category: PdfProcessing
Type: Feature Request
6
Provide a way to change the Name of a FormField from the RadDocument.AcroForm.FormFields collection.

As a workaround, you could create a new instance of a FormField with the desired name, add the new field in the document and remove the old one. You can use the following approach:
   1) Create a new instance of FormField (with the desired name, passed in the constructor), which will play the role of a copy of a specific FormField
   2) Copy all properties from the original field (they all vary, depending on the concrete type of the FormField, for example CheckBoxField, etc.)
   3) Create a new widget for the new field, and copy all properties from the original field's widget into the new one.
   4) Remove the original field from the RadDocument.AcroForm.FormFields collection and add the new field.
   5) Remove the original widget from the corresponding page's annotation and add the new one.

Attached is a project demonstrating this approach for a CheckBoxField.
Unplanned
Last Updated: 06 Jun 2018 15:02 by ADMIN
Currently, a default constant value is used for the font size in this scenario.
Unplanned
Last Updated: 12 Mar 2025 08:26 by ADMIN
For instance, we may implement WritePageAsync method in addition to the existing WritePage method. This is a similar scenario as in System.IO.StreamWriter class which has WriteLine and WriteLineAsync methods.
Completed
Last Updated: 01 Sep 2020 08:52 by ADMIN
Release R3 2020
When importing color space defined as an external resource name, a NotSupportedColorSpaceException: 'CS0 color space is not supported.' is thrown.
Completed
Last Updated: 13 Nov 2024 08:50 by ADMIN
Release 2024.4.1106 (Q4 2024)
In principle, the blend function B (Cb , Cs ) is used in the compositing formula to customize the blending operation in Adobe transparency imaging model. The blending mode may define any function which yields another result color from the backdrop and source colors. This will allow overlaying objects on each other forming a transparency stack.

Support for the Blend Mode parameter of the external graphic state should be implemented.
Completed
Last Updated: 07 Jul 2020 08:57 by ADMIN
Release R3 2020
According to the specification, the startfref keyword must be followed by the offset the xref table start on, defined on a new line. Some documents, however, have both entries defined on the same line, which leads to InvalidOperationException with message "Stack empty" while importing. Make sure this case is handled in PdfProcessing as well.
Completed
Last Updated: 27 Feb 2023 12:17 by ADMIN
Release R1 2023 SP1

CryptographicException is thrown when saving with PdfStreamWriter or importing with PdfFormatProvider.

The exception: System.Security.Cryptography.CryptographicException: 'The input data is not a complete block.'

Duplicated
Last Updated: 09 Dec 2021 07:22 by ADMIN
Created by: Maik
Comments: 6
Category: PdfProcessing
Type: Feature Request
6
Type 3 fonts are currently not supported.
Completed
Last Updated: 15 May 2024 06:30 by ADMIN
Release 2024.2.426 (2024 Q2)

According to the PDF specification:
A clipping path operator (W or W*) may appear after the last path construction operator and before the path-painting operator that terminates a path object.

Invalid:

W                          % clipping path operator
0 0 m                     % start of the path construction
596 0 l
596 842 l
0 842 l
h                            % end of the path construction
n                            % path-painting operator
Valid:
0 0 m
596 0 l
596 842 l
0 842 l
h
W
n

Currently (in the invalid cases), the path construction is skipped on import.

Duplicated
Last Updated: 31 Jan 2024 08:08 by ADMIN
Created by: Hugo
Comments: 0
Category: PdfProcessing
Type: Feature Request
6
Represents Highlights in PDF content. While the other annotations are drawn on top of the content, the highlight annotation is behind the text it highlights. The precise place where the highlight should be placed is described in the PDF file with the BDC, MCID and EMC operators. 
Completed
Last Updated: 12 Nov 2025 11:41 by ADMIN
Release 2025.4.1104 (2025 Q4)
Created by: Dimitar
Comments: 0
Category: PdfProcessing
Type: Feature Request
6
Add support for the PAdES-BES signature standard
Unplanned
Last Updated: 20 Dec 2024 11:06 by ADMIN
Currently, RadFixedDocumentInfo is used only for the export of Author, Title, and Description document metadata properties.
Completed
Last Updated: 02 Aug 2024 11:09 by ADMIN
Release 2024.3.802 (2024 Q3)
Created by: PBucher
Comments: 0
Category: PdfProcessing
Type: Feature Request
6
A text annotation represents a “sticky note” attached to a point in the PDF document. When closed, the annotation appears as an icon; when opened, it displays a pop-up window containing the text of the note in a font and size chosen by the viewer application.
Completed
Last Updated: 26 Jan 2026 14:32 by ADMIN
Release 2025.2.520 (2025 Q2)
Unplanned
Last Updated: 30 Jul 2024 14:14 by Mathew

This is the code for inserting the image: 

        static void Main(string[] args)
        {
            FixedExtensibilityManager.ImagePropertiesResolver = new ImagePropertiesResolver();

            //Telerik.Windows.Documents.Extensibility.JpegImageConverterBase defaultJpegImageConverter = new Telerik.Documents.ImageUtils.JpegImageConverter();
            //Telerik.Windows.Documents.Extensibility.FixedExtensibilityManager.JpegImageConverter = defaultJpegImageConverter;

            //Output("fyb-64.png", "output-working.pdf");
             Output("fyb.png", "output-broken.pdf");
        }
        private static void Output(string resourceName, string outputFileName)
        {
            var document = new RadFixedDocument();
            using (var editor = new RadFixedDocumentEditor(document))
            {
                Stream image = new FileStream(resourceName, FileMode.Open);

                var table = new Table
                {
                    LayoutType = TableLayoutType.FixedWidth,
                    Margin = new Thickness(10, 0, 0, 0),
                };

                var row = table.Rows.AddTableRow();
                var cell = row.Cells.AddTableCell();
                var block = cell.Blocks.AddBlock();
                block.InsertImage(image);
                editor.InsertTable(table);

                var pdfData = ExportToPdf(document);
                File.Delete(outputFileName);
                File.WriteAllBytes(outputFileName, pdfData);

                Process.Start(new ProcessStartInfo() { FileName = outputFileName, UseShellExecute = true });
            }
        }

        private static byte[] ExportToPdf(RadFixedDocument document)
        {
            byte[] pdfData;

            using (var ms = new MemoryStream())
            {
                var pdfFormatProvider = new PdfFormatProvider();
                pdfFormatProvider.Export(document, ms);
                pdfData = ms.ToArray();
            }

            return pdfData;
        }

Workaround: Instead of setting the ImagePropertiesResolver, set the JpegImageConverter: 

            Telerik.Windows.Documents.Extensibility.JpegImageConverterBase defaultJpegImageConverter = new Telerik.Documents.ImageUtils.JpegImageConverter();
            Telerik.Windows.Documents.Extensibility.FixedExtensibilityManager.JpegImageConverter = defaultJpegImageConverter;

Completed
Last Updated: 12 Feb 2025 15:20 by ADMIN
Release 2025.1.205 (2025 Q1)

When loading some PDF documents with German culture, part of the text got missing.

Workaround: set English culture before loading the document

Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");

Completed
Last Updated: 12 Feb 2025 15:21 by ADMIN
Release 2025.1.205 (2025 Q1)
ArgumentNullException is thrown when importing a document with missing indirect reference object.
Completed
Last Updated: 22 May 2025 13:36 by ADMIN
Release 2025.2.520 (2025 Q2)
IndexOutOfRangeException is thrown due to wrongly processed image data.
Completed
Last Updated: 12 Nov 2025 11:41 by ADMIN
Release 2025.4.1104 (2025 Q4)
Creating a document from an SVG image with a CapPathRound (stroke-linecap="round") adds unexpected lines.