Changelog

Release Notes

Stay up to date with the latest features, improvements, and bug fixes.

25.11.0Latest

November 28, 2025

Excel Viewer

  • Fixed a histogram value calculation error that occurred when exporting Excel files to PDF.
  • Resolved an issue where leader lines, chart axes, and shadow effects were missing during sheet-to-image rendering.

Image Viewer

  • Optimized JPEG2000 processing to significantly improve decoding speed and overall rendering performance.

Email Converter

  • Fixed an issue occurring during PDF-to-MSG conversion where a null value in the content-type named property caused the process to fail.

PDF Viewer & Converter

  • Improved performance in PDF-to-Image conversion, significantly reducing processing time.
  • Fixed an issue where certain languages were rendered incorrectly when converting EPUB files.
  • Resolved a highlight opacity issue during PDF-to-DOCX conversion.

Word Viewer

  • Implemented native rendering support for PDF radial gradients within Word documents.
  • Improved the handling and rendering of gradient brushes in Word files.

Features

  • Excel Printing Configuration: New properties PrintGridlines and PrintHeadings added.

25.10.0

October 31, 2025

New Product Launch

  • Doconut Converter Plugin: A new module for document conversion (PDF, DWG, PNG, JPG, MSG, EML, PPTX, XLSX, DOCX).

Excel Viewer

  • Optimized performance issues with pattern rendering.
  • Fixed green line appearing when rendering certain Excel files.

PDF Viewer

  • Improved PDF viewing performance for large and complex documents.
  • Fixed replacing text issue with large strings.
  • Fixed table rendering issue where page breaks were not created properly.

Word Viewer

  • Fixed content overlap in document header.
  • Fixed incorrect position of images in document headers.

25.9.0

September 30, 2025

Excel Viewer

  • Added support for applying user-defined print areas.
  • Resolved an issue where shapes in XLSX format were not rendered correctly.

Email Viewer

  • Resolved an issue where the Sent Date appeared twice when viewing MSG files.

PDF Viewer

  • Resolved an issue where some PDF files produced incorrect image rendering.
  • Corrected text formatting issues and scaling problems with embedded pictures.

Word Viewer

  • Resolved an issue where Chinese text became invisible.
  • Corrected spacing inconsistencies between parentheses and colons.
  • Addressed rendering issues where chart labels and plot areas were displayed incorrectly.

General

  • Improved handling of client IP normalization in .NET Framework for security.txt.

25.8.0

August 29, 2025

Excel Viewer

  • Resolved an issue where textboxes did not auto-adjust their width.
  • Corrected a rendering problem where chart labels were displayed incorrectly.

Email Viewer

  • Fixed a security issue in the version targeting .NET Framework 4.8.

Image Viewer

  • Optimized memory and CPU usage for PNG images.
  • Resolved an infinite loop issue encountered when processing JPEG2000 files.

PDF Viewer

  • Reduced page optimization time.
  • Improved memory efficiency during the processing of large volumes of text data.

Word Viewer

  • Corrected an issue where Chinese text was distributed improperly.

Visio Viewer

  • Optimized memory usage during rendering.
  • Resolved an issue where some shapes were stretched during rendering.

General

  • Addressed an issue where conversions running inside a background Task would fail.

25.7.0

July 31, 2025

Image Viewer

  • Added support for EMF, AVIF, and DJVU image formats.
  • Enhanced performance and resolved stability issues in DNG image viewer.
  • Resolved an error where CMX images could not be opened.

Project Viewer

  • Added support for rendering Title Horizontal and Title Vertical gridlines in Gantt charts.
  • Corrected an issue where certain MPP files containing a VBA project could not be read.

Visio Viewer

  • Resolved an issue where lines were incorrectly connected.
  • Corrected text alignment inside shapes.

General

  • Resolved an issue in ExportMetadata method where security.txt was not populated correctly.
  • Updated image processing engine in .NET 6 version for .NET 9 compatibility.

25.6.0

June 30, 2025

Word Viewer

  • Updated SkiaSharp to 3.119.0.
  • Corrected table width rendering inside text boxes and shapes.
  • Fixed page numbers in INDEX section.
  • Fixed table column widths in RTF documents.
  • Resolved missing images after rendering.

Excel Viewer

  • Fixed chart contents shifting.
  • Fixed arrow graphics size and position.
  • Fixed chart label positioning.

Email Viewer

  • Enhanced rendering quality for inline images in EML and MSG files.
  • Fixed embedded images extraction issue.

Image Viewer

  • Improved PNG compression level.
  • Resolved CMX and CDR image format opening issues.

25.5.0

May 30, 2025

Excel Viewer

  • Fixed negative number formatting.
  • Fixed legend text orientation.

Email Viewer

  • Optimized rendering performance.

Image Viewer

  • Enhanced TIFF viewing performance.
  • Improved color export quality and performance for TIFF images with ICC profiles.

PDF Viewer

  • Fixed green-tinted background issue.

Project Viewer

  • Fixed Gantt chart timescale label rendering.

PSD Viewer

  • Enhanced drop shadow rendering.

Visio Viewer

  • Fixed bold text sizing.
  • Fixed content cutoff issue.

25.4.0

April 29, 2025

Excel Viewer

  • Fixed text box collapse issue.
  • Addressed performance degradation.

Visio Viewer

  • Fixed extra white space in grouped shapes.
  • Resolved incorrect rendering of hyphens and slashes.

Email Viewer

  • Fixed lost spaces in EML viewer.

PDF Viewer

  • Fixed Japanese text formatting.
  • Resolved SVG rendering issue.

Project Viewer

  • Fixed timescale rendering issues.
  • Corrected start and finish dates for timephased data.

25.3.0

March 28, 2025

Features

  • Email Encoding property added.
  • Subject & Body Encoding properties added.

Enhancements

  • Improved PDF performance and memory consumption.
  • Improved email character encoding handling.

Bug Fixes

  • Resolved blacked out PDF document issue.

25.2.0

February 28, 2025

Enhancements

  • CAD Viewer: Added MTEXT support, fixed DWF visibility, improvements for .NET Core.
  • Excel Viewer: Added Rich Text support, resolved chart alignment.
  • Email Viewer: Fixed EML date shift issue.
  • Image Viewer: Fixed blank TIFF output, optimized SVG memory, resolved CDR rendering bugs.
  • PDF Viewer: Enhanced image compression, improved table rendering, fixed Chinese character rendering.

Bug Fixes

  • Resolved Word file loading issue due to custom fonts.

Important

  • Update System.Text.Json to 8.0.5.

25.1.0

January 31, 2025

Features

  • Resolved issues in ExportToPng and ExportMetadata methods.

Enhancements

  • Excel Viewer: Added AutoShapes support for ODS, fixed chart background colors.
  • Email Viewer: Resolved MSG file display issue.
  • Image Viewer: Improved CDR stability, enhanced TIFF frame loading.
  • PSD Viewer: Corrected PSD shape layer handling, fixed rendering for older Photoshop versions.
  • Visio Viewer: Fixed VSDX background and text corruption.

24.12.1

December 30, 2024

Features

  • FontFolders property added to WordConfig.

Enhancements

  • Excel Viewer: Font/Cell Color in Data Sorter, Center alignment support.
  • Email Viewer: Fixed TO field parsing in EML.
  • PowerPoint Viewer: Precise text placement, restored text shadows.
  • Project Viewer: Fixed Timescale rendering.
  • PSD Viewer: Correct handling of Shape layers.
  • Visio Viewer: Improved Arabic language support.

24.10.0

October 30, 2024

Features

  • Embedded JavaScript and CSS Resources in Doconut DLLs.

Enhancements

  • Resources Folder added to Samples.
  • CAD Viewer: Line styles support, optimized CadHatch.
  • Excel Viewer: Limit/grouped equations support.
  • Email Viewer: SMIME support.
  • Image Viewer: Enhanced TIFF memory management.
  • PSD Viewer: Optimized Gradient Effects.
  • PowerPoint Viewer: Improved chart rendering.
  • Project Viewer: Task bar shapes support.
  • Word Viewer: Color control for shading, improved background rendering.

Bug Fixes

  • Visio Viewer: Fixed rogue line issue.

24.9.0

September 30, 2024

Enhancements

  • Embedded libraries for .NET Standard/Core and .NET 6.
  • Performance fixes in PDF and Word.
  • Added AutoFitAllTables property in Word configuration.
  • Added GetThumbnailDimensions method.

Bug Fixes

  • Resolved image annotations issue.

24.8.0

August 20, 2024

Enhancements

  • Search and copy functionalities in Word, Excel, PowerPoint.
  • New ExportFileToPdf function.
  • SplitSegments option in PDF configuration.
  • Added Doconut.Plugins.dll.
  • Custom error log path in Doconut.Clouds.dll.

Bug Fixes

  • Resolved image attachment overflow in emails.
  • Resolved Ionic.Zip.dll issue.

24.7.0

July 15, 2024

Enhancements

  • Added TimeZoneOffset in EmailConfig.
  • New Configurations: PsdConfig, TxtConfig, TiffConfig.
  • CAD Viewer: DGN rendering, optimized loading.
  • Excel Viewer: Image recoloring, color adjustments.
  • Email Viewer: New rendering option.
  • Image Viewer: SVG detection fix, EPS rendering resolution.
  • MHT Viewer: New render support.
  • PDF Viewer: Multi-layer PDF fix.
  • PSD Viewer: Performance enhancements.
  • PowerPoint Viewer: Font/hyperlink fixes.
  • Project Viewer: Multi-page generation fix.
  • Word Viewer: Additional render optimization.
  • Visio Viewer: Extended rendering capability.
  • XPS Viewer: New render support.

Fixes

  • Fixed multiple page display issue.
  • Fixed CallContext exception.

24.6.0

June 17, 2024

Enhancements

  • CAD Viewer: Optimized loading, enhanced export, improved DXF text.
  • Email Viewer: Accurate date handling, enhanced EMLX support.
  • EPUB Viewer: Enhanced performance, refined paragraph processing.
  • Excel Viewer: Seamless cell merging, embedded images, text direction.
  • MHT Viewer: Performance optimizations, image rendering.
  • PowerPoint Viewer: Accurate chart rendering, optimized memory, reliable hyperlinks.
  • Project Viewer: Precise unit display, portrait view option.

Fixes

  • Improved focus handling in iframe.
  • Fixed printing crop issue.

24.5.3

May 31, 2024

General

  • Custom Fonts Support for PowerPoint.
  • Doconut License Integration via XML/Stream.
  • Memory Usage Optimization.
  • Improved PDF viewer performance.
  • Boosted CAD viewer performance.
  • Fixed TIFF viewing issue.
  • Resolved DWG file error.

24.4.0

April 15, 2024

General

  • CAD/DGN engine improvements.
  • Excel engine optimization.
  • PowerPoint engine optimization.
  • PSD engine optimization.
  • Fixed watermark issues.
  • Fixed PowerPoint opening errors.

24.3.2

March 25, 2024

General

  • Doconut .NET 6 released.
  • Added to Nuget repository.
  • Optimized PDF loading.
  • Upgraded Word processing.
  • Enhanced Visio viewer.
  • Image memory optimization.
  • Custom cultures support.
  • Flexible licensing.
  • Fixed PDF checkbox issue.
  • Fixed custom watermark strings.
  • Important: Update Newtonsoft.Json and System.Text.Encoding.CodePages.

1.0.5.2

February 14, 2024

General

  • Improved PDF performance.
  • Upgraded Word viewer.
  • Enhanced Visio viewer.
  • Addressed Project viewer performance.
  • Improved email engine.
  • Fixed DWG display.
  • Fixed PDF hyperlink issue.

1.0.5.1

January 05, 2024

General

  • Visio compatibility improvements.
  • New AWS/Azure samples.
  • Fixed stamp annotation resizing.
  • Fixed annotation export duplication.
  • Fixed DWG blurry rendering.
  • Fixed Excel header positioning.

1.0.5.0

October 25, 2023

General

  • Updated Word engine.
  • Fixed Arabic Word docs issues.
  • Updated PDF engine for Arabic fonts.
  • Resolved PDF generation bug.
  • Optimized Email Engine.
  • Improved PSD engine.
  • Important: SkiaSharp and System updates.

1.0.4.2

January 15, 2022

General

  • Update ExportAnnotationToPdf name changed.
  • Update ExportToPdf parameters.
  • New ExportToPdf with filePath overload.
  • Speed improvements in annotation pdf export.
  • New FixInvalidImages option.
  • New ExportToPdfImage method.
  • New ExportAnnotationsToPdf native option.
  • New ExcelConfig options.
  • New Config option CachePages.
  • New samples and functions.

1.0.4.1

August 01, 2022

General

  • New Watermark RGB color support.
  • New Session restriction feature.
  • New IP restriction feature.
  • New DoconutOptions.
  • New perPageThread parameter.
  • New grayScale parameter.
  • New ExcelConfig options.
  • Update InitCache.
  • Update ExportPdfA and ConvertPdf defaults.
  • Fix touch support.
  • Improvements in rendering.

1.0.4.0

April 02, 2022

General

  • New .Net 6 compatible.
  • New Angular sample.
  • New ExportToPdfWatermark method.
  • New Annotation code behind API.
  • New GetPdfBookmarks method.
  • New custom license path.
  • New SetWatermark overload.
  • Improvements in rendering.

1.0.3.9

Feb 01, 2022

General

  • Update: .NET framework min version 4.7.
  • Update: IncludeJqueryUI default false.
  • New Cloud support.
  • New ExportToCloud/UploadToCloud methods.
  • New InitCache method.
  • New LargeDocument sample.
  • New SplitToPdf and MergeFromPdf methods.
  • New client side events.
  • Fixes for Slides, BouncyCastle, Pdf links, AutoLoad, Search result div, Zoom.

1.0.3.8

Sep 01, 2021

General

  • New Search without OCR/SRH.
  • New AllowSearch option.
  • New CopyMode option.
  • New AllowCopy option.
  • New SaveSearch method.
  • New Pdf links available.
  • New ConvertPdf option.
  • New FileFormat API.
  • Fixes for Excel, Document links, Search div, Focus, Tif files.

1.0.3.7

May 25, 2021

General

  • Blazor/Razor pages samples added.
  • New Sample solutions.
  • .NET Core CSS updates.
  • Improvements in CAD viewer.
  • New TifConfig.
  • New SetWatermark method.
  • New CloseDocument method.
  • New ExportAnnotationsToPng method.
  • New ExportToPng overload.
  • New WebFarm settings.
  • New Search support in WebFarm.
  • New Note annotation features.
  • New WordConfig option.
  • Fixes for Note annotation, Pdf DefaultRender, Console JS errors, Annotation save.

1.0.3.6

Feb 15, 2021

General

  • New GetRotateInfo method.
  • New DefaultRender option in PdfConfig.
  • New Flip feature.
  • New EmailCofig SkipExternalImages.
  • New ExcelConfig options.
  • Update in WordConfig and EmailConfig.
  • Update in ExportToPng.
  • Fixes for Freehand annotation, FitWidth/Height, CSS padding, Tooltip, Excel formula, Pdf links.

1.0.3.5

Nov 01, 2020

General

  • OpenDocument Uri overload update.
  • Webfarm support for annotation.
  • jQuery 3.5.1 default.
  • jQuery UI upgrade.
  • HideThumbs bug fix.
  • Culture option in excel config.
  • Annotation improvements.

1.0.3.4

July 20, 2020

General

  • Viewing enhancements.
  • Improvements in Diskimage handler.
  • New Webfarm support.
  • DWG, MPP & VSD native support in .NET core.
  • New OpenDocumentService.
  • New ImageConfig options.
  • New HyperlinksPageCount.
  • New ImageResolution.
  • New DefaultRender for CAD.
  • New 3D support in CAD.
  • New ExportAnnotationToPdf method.
  • Fix rotation bug.

1.0.3.3

Jan 08, 2020

General

  • Fix for large Project / MPP files.
  • Fix for Word files with ConvertPdf.
  • New PdfMargins in DWG.

1.0.3.2

Aug 15, 2019

General

  • New FixedZoom properties.
  • New clickable links in docs.
  • New Search MVC sample.
  • Fix excel viewing.
  • Fix watermark font.
  • Fix text annotation border.

1.0.3.1

July 01, 2019

General

  • Watermark corner support.
  • New web.config setting.
  • Fix page reload bug.
  • New ExcelConfig options.

1.0.3.0

May 01, 2019

General

  • Moving after rotation bug fixed.
  • Added watermark support for DiskHandler.
  • Fix zoom and fittype bug.
  • New ImageConfig.
  • New Refit() call.
  • New MSG/EML as HTML option.
  • New samples.

1.0.2.9

February 20, 2019

General

  • Added support for .NET core / standard.
  • Added PDF-A support.
  • Fixed empty excel error.
  • New modern UI sample.

1.0.2.8

September 15, 2018

General

  • Improved Excel export.
  • Search supports multiple words.
  • Fix for jQuery 3.0+ scroll.
  • Added touch zoom.

1.0.2.7

July 15, 2018

General

  • Improved AutoCAD support.
  • Improved Html rendering.
  • Support for latest jQuery.
  • Better PDF export.

1.0.2.6

April 15, 2018

General

  • Improved AutoCAD support.
  • Html plugin Windows 2016 support.

1.0.2.5

December 06, 2017

General

  • Added OnPageClicked event.
  • New DocumentConfig options.
  • New GetDocumentFormat method.
  • Support for AutoCAD 2018.
  • Removed Submit Query text.

1.0.2.4

August 24, 2017

General

  • Support for MVC Razor.
  • New DCN server project.
  • Fixed Annotation border size.

1.0.2.3

March 01, 2017

General

  • Improvements in CAD format, DXF support.
  • Added custom configurations support.
  • Threading added to DiskImageHandler.
  • Fixed bugs in text annotation.

1.0.2.2

October 01, 2016

General

  • Improvements in CAD format.
  • New LargeDoc property.

1.0.2.1

March 01, 2016

General

  • Added support for MHT.
  • Improvements in Tiff viewing.
  • SafeLoad option in Excel.
  • New ExportToPdf overload.
  • Freehand annotation bugs fixed.

1.0.2.0

September 10, 2015

General

  • Fixed Annotation plug-in load issue.
  • Fixed Annotation Ajax saving issue.

1.0.1.9

March 31, 2015

General

  • Support for client side JavaScript events.
  • Stamp annotation control improved.
  • Mobile support added.
  • ShowAnnotations function update.
  • New property MaxZoom.
  • New javascript function VisiblePages().
  • Bug fixed when annotating multiple documents.

1.0.1.8

October 15, 2014

General

  • Annotation creation improved.
  • Arrow annotation rendering improved.
  • Annotation sample page enhanced.
  • Thumbnails show annotations.
  • Support for CSV added.
  • New WatermarkInfo and AutoClose property.
  • New sample pages.
  • jQuery updated.

1.0.1.7

July 31, 2014

General

  • New properties AutoLoadPages and CacheEnabled.
  • Support for OpenOffice formats.
  • New function to hide pages.
  • Asp.Net print landscape support.
  • SVG and EPUB discontinued.
  • Password sample page added.
  • User Control sample page added.
  • New help pdf file.

1.0.1.6

May 15, 2014

General

  • New properties for tooltip and zoom.
  • New Mobile, Update Panel samples.
  • Bug in HTML and MPP fixed.
  • Support for EPUB & SVG discontinued.

1.0.1.5

February 20, 2014

General

  • New function for exporting documents to PDF.
  • New Office Ribbon sample.
  • Bug in Word and Dicom fixed.
  • New Support for EPUB & SVG formats.

1.0.1.4

December 25, 2013

General

  • Smooth text annotations and new image annotation type.
  • Note annotation non ASCII support.
  • New property IncludeJQueryUI.
  • New property BasePath.
  • New JavaScript property IsLoaded.
  • Fix for Excel, PowerPoint and CAD formats.

1.0.1.3

June 01, 2013

General

  • Added search function.
  • Better support for XLS files.

1.0.1.2

March 29, 2013

General

  • New property FitType.
  • Change FitType from javascript api.
  • Support added for TXT files.
  • Print Silverlight window icons.
  • Fixed bug for MSG files.

1.0.1.1

March 15, 2013

General

  • You can now save documents to a common .DCN format.

1.0.1.0

Feb 20, 2013

General

  • Added print support which requires silverlight.
  • Added annotation support.