Essential Studio® for Document Processing - v33.1.47 Release Notes

v33.1.47
April 07, 2026
Test Results: 234531 Success , 0 Failure

PDF Library

.NET PDF Library

Bug Fixes

  • I815178 - Fixed an issue causing the OrderFormFields API to incorrectly preserve the tab order of PDF form fields.

JavaScript PDF Library

Bug Fixes

  • I823252 - Addressed an issue with incorrect retrieval of form field names in a specific PDF document.
  • I825694 - Resolved an issue where the signature was not preserved correctly after flattening the PDF document.
  • I822844 - Resolved an issue that caused PDF corruption during the redaction process for a specific document.
  • I819466 - Resolved an issue where the checkbox form field state was not returned correctly.

Word Library

.NET Word Library

Bug Fixes

  • I820913 - Textbox with bottom extent are now preserved properly while converting a RTF document to PDF.
  • I823374 - Latin character is now preserved properly during converting a HTML document to DOCX.
  • I821010 - Autofit table with undefined cell widths are now preserved properly while converting a DOCX document to PDF.
  • I820555 - Document with revisions will no longer be corrupted after calling UpdateTableOfContents API.
  • I826716 - The ArgumentOutOfRangeException will no longer be thrown while converting a DOCX format document with Autofit table to PDF.
  • I822430 - VML Group Shape contains picture is now preserved properly while converting a DOCX document to PDF.
  • I821581 - Text form fields will be preserved properly with carriage return character during DOCX to PDF.
  • I813095 - The NullReferenceException will no longer thrown due to multiple paragraphs contained field while converting Word document to PDF.
  • I824590 - Hanging issue will no longer occur due to dynamic re-layout while converting a DOCX with multi-column to PDF.

PowerPoint Library

.NET PowerPoint Library

Bug Fixes

  • I824639 - The ArgumentOutOfRangeException will no longer be thrown while converting PowerPoint Presentation with invalid table row span to PDF.

PDF Viewer

Web PDF Viewer (Javascript, Angular, React, Vue, ASP.NET Core & MVC)

Bug Fixes

  • #I823501 - Fixed an issue where the List Box font color was not retained in the print preview and the downloaded PDF documents.
  • #I823444 - The findTextAsync method now works in server side rendering mode before the extractTextCompleted event is triggered.
  • #I821565 - Fixed an issue where changes to handwritten signature opacity were not applied correctly when adjusting opacity and interacting with the PDF page.
  • #I821279 - Resolved a script error that occurred while redacting the customer provided document.

Blazor PDF Viewer

Bug Fixes

  • #I821719 -Implemented support to display bookmark styling attributes, including font color and font style, only during rendering in the PDF Viewer.
  • #I825513 -Resolved the newline handling issue encountered when editing FreeText annotations programmatically in the PDF Viewer document loaded event.

.NET MAUI PDF Viewer

Bug Fixes

  • #I824643 - The PDF Viewer no longer shows a bottom gradient when the bottom toolbar is hidden on iOS and Android.

WPF PDF Viewer

Bug Fixes

  • I821996 - Programmatically added Form Field textbox’s text changes are now properly preserved in the saved document.

WinForms PDF Viewer

Bug Fixes

  • I820799 - StackOverFlow Exception will no longer be occur while loading document.

DOCX Editor

Web DOCX Editor (Javascript, Angular, React, Vue, ASP.NET Core & MVC)

Bug Fixes

#I819468 - Fixed a script error that occurred when the header contained comments.
#I817314 - Resolved a layout issue when the header contained a wrapped image.
#I820418 - Added a prohibition cursor for blocked drag-and-drop operations.
#I826724 - Fixed a script error in the Picture Format tab after inserting an image.
#I822512 - Fixed an issue where bullet points were removed when pasting SFDT content into a selected range.
#I822969 - Resolved an issue where mouse selection caused bookmark loss during paste operations.
#I802829 - Fixed a table layout collapse issue after applying a fill color.
#I822187 - Fixed an issue where bookmark highlighting was removed after drag-and-drop.
#I823499 - Corrected incorrect row resize behavior.
#I821686 - Resolved a formatting loss issue when using the Paste API with the MergeWithExistingFormatting option.

Blazor DOCX Editor

Bug Fixes

#I819468 - Fixed a script error that occurred when the header contained comments.
#I817314 - Resolved a layout issue when the header contained a wrapped image.
#I820418 - Added a prohibition cursor for blocked drag-and-drop operations.
#I826724 - Fixed a script error in the Picture Format tab after inserting an image.
#I822512 - Fixed an issue where bullet points were removed when pasting SFDT content into a selected range.
#I822969 - Resolved an issue where mouse selection caused bookmark loss during paste operations.
#I802829 - Fixed a table layout collapse issue after applying a fill color.
#I822187 - Fixed an issue where bookmark highlighting was removed after drag-and-drop.
#I823499 - Corrected incorrect row resize behavior.
#I821686 - Resolved a formatting loss issue when using the Paste API with the MergeWithExistingFormatting option.

Test Results

Component Name Platform Test Cases Passed Failed Remarks
Calculate Library .NET 145 145 0 All Passed
DOCX Editor Blazor 1985 1985 0 All Passed
DOCX Editor Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 5183 5183 0 All Passed
Excel Library .NET 37992 37992 0 All Passed
Metafile Renderer .NET 897 897 0 All Passed
PDF Library .NET 14019 14019 0 All Passed
PDF Viewer .NET MAUI 15368 15368 0 All Passed
PDF Viewer Blazor 16523 16523 0 All Passed
PDF Viewer Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 21897 21897 0 All Passed
PDF Viewer Windows Forms 209 209 0 All Passed
PDF Viewer WPF 3040 3040 0 All Passed
PowerPoint Library .NET 54541 54541 0 All Passed
Spreadsheet Blazor 4130 4130 0 All Passed
Spreadsheet Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 10803 10803 0 All Passed
Spreadsheet WPF 2716 2716 0 All Passed
Word Library .NET 41004 41004 0 All Passed
Word Library Java 4079 4079 0 All Passed