Essential Studio® for Document Processing - v35.1.42 Release Notes

v35.1.42
October 27, 2026
Test Results: 238665 Success , 0 Failure

JavaScript Excel Library

Features

  • Added usedRange, lastRow, and lastColumn properties to Worksheet for easy access to worksheet boundaries.
  • Added the selectedRange API to Worksheet to retrieve selected cell ranges as A1-style address strings.
  • Added resolved RGB color support through the rgbColor property for font and fill colors in Cell.style.
  • Added the textIndent property to Alignment with CSS compatible pixel values and automatic locale stripping for number formats.
  • Added isLocked, rowSpan, and colSpan convenience properties to Cell.
  • Added support for custom filter conditions and date group filtering in auto filter columns.
  • Added the Worksheet.getRowStyle() method to retrieve row-level fill colors and styling information.
  • Added support for column and row hiding, stored unhide sizes, column locking, and explicit row height APIs.

Bug Fixes

  • Resolved an issue where row and column level number formats were not applied to cells without explicit style records.

Smart Data Extraction Library

.NET Data Extraction Library

Features

  • Provided support for detecting the document type from PDF/Image documents.

Bug Fixes

  • #I883173 - Fixed an issue where key-value pairs were extracted incorrectly from complex table layouts containing multiple rows and columns.

JavaScript Word Library

Features

  • Added support for creating and modifying chart elements in DOCX documents.
  • Added support for creating equations using LaTeX and Math DOM, and modifying MathML equations in DOCX documents.
  • Added support for creating and modifying built-in and custom document properties in DOCX documents.

Word Library

.NET Word Library

Bug Fixes

  • #F198623 - The PlatformNotSupportedException is no longer thrown when calling the WordDocument constructor in UWP .NET Native applications.
  • #I881668 - XML-mapped extended document properties are now updated properly during Word to PDF conversion.
  • #I868206 - Text is now preserved correctly when using the Microsoft Sans Serif font with bold formatting during Word-to-PDF conversion.
  • #I879316 - Pagination issues caused by dynamic re-layout around pictures will no longer occur during Word-to-PDF conversion.
  • #I881323 - The NullReferenceException will no longer be thrown for documents containing floating tables during Word-to-PDF conversion.

Excel Library

.NET Excel Library

Bug Fixes

  • #I877317 - Excessive memory consumption is now prevented when converting Excel cells with number formats to PDF.
  • #I877726 - NullReferenceException is no longer thrown during PDF conversion when the Excel document contains an invalid image.
  • #I880094 - Images with 180-degree rotation and flip effects are now rendered correctly during Excel to PDF conversion.
  • InvalidOperationException is no longer thrown in DisableSheetCalculations during concurrent Excel to PDF conversions.

PowerPoint Library

JavaScript PowerPoint Library

features

  • Added support for built-in document properties, including details such as Title, Author, Subject, and Keywords, which help identify the document’s topic and content.
  • Added support for custom document properties, enabling users to define and manage custom metadata for documents.
  • Added support for creating charts in PowerPoint presentations.
  • Added support for modifying chart elements such as Chart Area, Plot Area, Data Points, Axes, Legend, Title, and Data Labels in PowerPoint presentations.

PDF Viewer

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

Bug Fixes

  • #I881317 - Resolved an issue where the author property was overwritten when loading existing annotation documents in the PDF Viewer.
  • #I880134 - Fixed an issue where the PDF Viewer UI froze when loading documents containing a large number of annotations.

DOCX Editor

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

Bug Fixes

#I869873 - Resolved an issue where resizing a middle table column caused unexpected row expansion in the Document Editor.
#I882047 - Fixed an issue where paragraphs overlapped when pressing Enter and Backspace at the beginning of headings in the Document Editor.
#I879471 - Resolved an issue where the column width of a pasted table differed from Microsoft Word.
#I873723 - Fixed an issue where the page became unresponsive when importing a document.
#I881279 - Resolved an issue where deleting part of a comment and navigating to it caused an error.
#I880263 - Fixed an issue where inserting a remote bookmark with an existing bookmark name caused the editor to freeze during collaborative editing.
#I879822 - Resolved an issue where RTL paragraph alignment differed between the Document Editor and Microsoft Word.
#I879048 - Fixed an issue where the Insert Table dialog did not validate maxRows correctly and displayed an incorrect validation message in the Document Editor.
#I875001 - Resolved an issue where text in the header section could not be selected or navigated using the keyboard.
#I869629 - Fixed multiple document rendering and editing issues in SFDT documents.
#I877768 - Resolved an issue where the viewport became blank and the toolbar flickered during batch editing.

Spreadsheet Editor

Blazor Spreadsheet Editor

Bug Fixes

  • #F74941 - Fixed the accessibility issues where entering edit mode did not announce the active cell address to screen reader users and the Name Box was incorrectly announced as a Combo Box instead of Name Box.

Test Results

Component Name Platform Test Cases Passed Failed Remarks
Calculate Library .NET 145 145 0 All Passed
DOCX Editor Blazor 2006 2006 0 All Passed
DOCX Editor Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 5303 5303 0 All Passed
Excel Library .NET 38040 38040 0 All Passed
Metafile Renderer .NET 956 956 0 All Passed
PDF Library .NET 14250 14250 0 All Passed
PDF Viewer Blazor 17178 17178 0 All Passed
PDF Viewer Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 21928 21928 0 All Passed
PDF Viewer .NET MAUI 15368 15368 0 All Passed
PDF Viewer Windows Forms 209 209 0 All Passed
PDF Viewer WPF 3040 3040 0 All Passed
PowerPoint Library .NET 54557 54557 0 All Passed
Spreadsheet Blazor 6089 6089 0 All Passed
Spreadsheet Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 10984 10984 0 All Passed
Spreadsheet WPF 2731 2731 0 All Passed
Word Library .NET 41802 41802 0 All Passed
Word Library Java 4079 4079 0 All Passed