Essential Studio® for Document Processing - v32.1.20 Release Notes

v32.1.20
December 23, 2025
Test Results: 226408 Success , 0 Failure

PDF Library

.NET PDF Library

Bug Fixes

  • I782908 - Resolved an issue where incorrect characters appeared in conformance-converted documents containing form fields.
  • I791830 - Fixed a conformance validation failure that occurred after PDF conversion.
  • I786764 - Resolved a preservation issue that occurred during PDF/A conversion for a specific document.
  • I788985 - Resolved an issue where an exception was thrown randomly during text extraction when running in multithreading mode.
  • I795057 - Fixed the issue where ZUGFeRD PDF generation incorrectly produced A1-B conformance instead of A3-A.
  • I787965 - Fixed an issue where items in PdfLoadedCheckBoxField were missing during PDF form processing.
  • I792764 - Fixed an issue where the font style was not applied correctly for complex script text.
  • I779395 - Resolved a PDF/A-2a compliance issue that occurred in merged PDF documents.
  • I786534 - Resolved an issue where the exported annotation JSON file was not generated in the correct format.
  • I788735 - Resolved a performance degradation issue caused by excessive memory usage during Word-to-PDF image rendering.

Flutter PDF Library

Bug Fixes

  • GH2477 - Resolved an issue where the check marks in some checkbox fields were not rendering correctly in a specific PDF document.

Word Library

.NET Word Library

Bug Fixes

  • I792379 - Images from web URLs are now exported properly while converting an HTML document to Markdown.
  • I793442 - Document protected with SHA1 algorithm is now unprotected properly.
  • I794013 - Nested table grid columns are now preserved properly while opening the RTF format document.
  • I793823 - Date and time fields are now locked properly when re-saving a DOCX document.
  • I793068 - DOCX document will no longer be corrupted when resaving as DOCX with mail merge recipient content.
  • I794826 - Picture inside the table cell is now positioned properly while converting Word document to PDF.
  • I793337 - Text position is now updated properly while converting Word document with tab after text wrapping item to PDF.
  • I793373 - Table cell text position is now updated properly while converting word document with text wrapping item to PDF.
  • I787714 - Diagonal watermark width is now preserved properly while converting a Word document to PDF.

Excel Library

.NET Excel Library

Bug Fixes

  • #I794612 - Exception is no longer thrown when data validation contains an empty formula.
  • #I793568 - Exception is no longer thrown when merging cells in an empty sheet.
  • #I791106 - DisplayText is updated correctly when changing the number format for a cell that contains a formula.
  • #I789580 - AutoFill with Fill Series preserves filled values correctly when the number format is set to text.
  • #I790206 - DisplayText returns the correct cell value when the number format is applied in fraction.
  • #I788276 - The filter icon is preserved in the destination sheet when using the AddCopy operation.
  • #I729284 - Pictures anchored to cells are preserved when resaving the Excel file.
  • #I793352 - Border is copied correctly for merged cells when using AutoFill with the Fill Copy option.
  • #I789131 - Strings with numbers that contain leading zeros fill correctly when using AutoFill with the Fill Series option.
  • #I781132 - Exception is no longer thrown when using ExpandoObject in template markers with nested objects.
  • #I793812 - Merged cell values are preserved correctly when clearing formats.
  • #I793320 - Formula cell values with embedded double quotes are preserved correctly when converting XLSX to CSV.
  • #I792233 - Exception is no longer thrown when getting used cells after replacing an array formula with a cell value.
  • #I786117 - Borders and text are preserved properly when importing HTML tables with rowspan and colspan into Excel.
  • #I791756 - Column is preserved correctly in Excel to PDF conversion when a print title is applied with the FitColumnOnOnePage option.
  • Exception is no longer thrown when accessing a slicer in a worksheet.
  • Resaving an XLSB file that contains number formats with different record structures no longer causes corruption.
  • Exception is no longer thrown during Excel to HTML conversion for unsupported characters.

PowerPoint Library

.NET PowerPoint Library

Bug Fixes

  • I793115 - Bullet points within bullet-list SmartArt shapes will now be preserved properly while converting PPTX to PDF.

PDF Viewer

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

Bug Fixes

  • #I796714 - Resolved an issue where the annotation property tool UI was displayed incorrectly after repeatedly switching between the Text Markup tool and Ink Annotation tool on iPad devices when enableDesktopMode API was set to true.
  • #I788303 - Resolved an issue where the stamp annotation appearance was incorrect after rotating, dragging, and resizing.
  • #I778410 - Fixed an issue where the annotationMouseLeave event was triggered unexpectedly when hovering over annotations.
  • #I793903 - Resolved an issue where the text area expanded while typing in a Free Text annotation.
  • #I788306 - Fixed an issue where the shape label position and font size were incorrect in the downloaded document.
  • #I790403 - Resolved an issue where clicking the last comment scrolled to the top of the comment panel.
  • #I791590 - Resolved an issue where a gap appeared between the line and end style when lineHeadStyle was set to Butt.
  • #I796761 - Resolved an issue where Free Text annotations could not be edited via double tap and long press on iPad devices when enableDesktopMode API was set to true.
  • Resolved an issue where radio button groups across different pages caused a null-reference error and broke page rendering.

.NET MAUI PDF Viewer

Bug Fixes

  • #I792341 - PDF Viewer no longer crashes with CGPDFDocumentInitializationException when loading the specific PDF multiple times on the iOS platform.
  • #I791687 - You can now select and edit text portions in text form fields in the PDF within the PDF Viewer.
  • #I793021 - Setting SafeAreaEdges to None now correctly applies to the bottom area in the PDF Viewer on .NET 10 for iOS platform.
  • #FB71042 - Annotations is now rendering on first page of the specific PDF in PDF Viewer on the iOS platform.

Flutter PDF Viewer

Bug Fixes

  • #I793368 - Now, the SfPdfViewer widget renders pages correctly when using the syncfusion_pdfviewer_android package on lower-end Android devices.

DOCX Editor

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

Bug Fixes

#785176 - Fixed misalignment of spell-check underline caused by leading space in the error element.
#772957 - Resolved issue where bookmarks were removed when inserting text.
#785511 - Corrected highlight color behavior during text insertion in highlighted paragraphs.
#788338 - Updated bookmark behavior to move to the next paragraph when pressing Enter.
#792266 - Fixed script error occurring when pasting text inside a table.
#789132 - Resolved paragraph and bookmark position issues during rendering.
#791795 - Fixed table overlap after inserting columns and rows in Blazor WASM.
#792760 - Corrected gap at the right corner when applying table shading.
#779998 - Fixed table border toggle issue when applied from the toolbar.
#784718 - Resolved spell-check “Ignore” and “Ignore All” issue when selecting.

Blazor DOCX Editor

Bug Fixes

#785176 - Fixed misalignment of spell-check underline caused by leading space in the error element.
#772957 - Resolved issue where bookmarks were removed when inserting text.
#785511 - Corrected highlight color behavior during text insertion in highlighted paragraphs.
#788338 - Updated bookmark behavior to move to the next paragraph when pressing Enter.
#792266 - Fixed script error occurring when pasting text inside a table.
#789132 - Resolved paragraph and bookmark position issues during rendering.
#791795 - Fixed table overlap after inserting columns and rows in Blazor WASM.
#792760 - Corrected gap at the right corner when applying table shading.
#779998 - Fixed table border toggle issue when applied from the toolbar.
#784718 - Resolved spell-check “Ignore” and “Ignore All” issue when selecting.

PDF Library

JavaScript Library

Bug Fixes

  • Fixed an issue where stamp annotations were lost after saving the document multiple times.
  • Fixed a bad font error that appeared when incremental updates were disabled for a particular PDF.
  • Fixed a script error that occurred while importing a page range into a new PDF.
  • Fixed an issue where redaction annotations with overlay text were not preserved correctly on rotated pages.
  • Fixed an issue where form fields were not visible in adobe acrobat while importing a page range into a new PDF.

Test Results

Component Name Platform Test Cases Passed Failed Remarks
Calculate Library .NET 145 145 0 All Passed
DOCX Editor Blazor 1944 1944 0 All Passed
DOCX Editor Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 5023 5023 0 All Passed
Excel Library .NET 37900 37900 0 All Passed
Metafile Renderer .NET 863 863 0 All Passed
PDF Library .NET 13712 13712 0 All Passed
PDF Viewer Blazor 14722 14722 0 All Passed
PDF Viewer Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 19374 19374 0 All Passed
PDF Viewer Windows Forms 207 207 0 All Passed
PDF Viewer WPF 2998 2998 0 All Passed
PDF Viewer .NET MAUI 14684 14684 0 All Passed
PowerPoint Library .NET 54516 54516 0 All Passed
Spreadsheet Blazor 2870 2870 0 All Passed
Spreadsheet Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 10411 10411 0 All Passed
Spreadsheet WPF 2697 2697 0 All Passed
Word Library .NET 40263 40263 0 All Passed
Word Library Java 4079 4079 0 All Passed