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id: “conholdate-total-for-net-26-4” slug: “conholdate-total-for-net-26-4” linktitle: “Conholdate.Total for .NET 26.4.0 Release Notes” title: “Conholdate.Total for .NET 26.4.0 Release Notes” productName: “Conholdate.Total for .NET” weight: 1 description: “Conholdate.Total for .NET 26.4.0 Release Notes – the latest updates and fixes.” type: “repository” layout: “release” hideChildren: false toc: false family_listing_page_title: “Conholdate.Total for .NET 26.4.0 Release Notes” menuItemWithNoContent: false link: “/total/net/release-notes/2026/conholdate-total-for-net-26-4”

Conholdate.Total 26.4.0 – Release Summary

Conholdate.Total 26.4.0 bundles the latest 26.4.0 releases of the GroupDocs and Aspose .NET APIs. Highlights include a wealth of new features (side‑by‑side PDF comparison, per‑TFM NuGet packages, HTML table extraction, AI‑driven OCR table detection, named @page rules, Apple archive composition, etc.), performance‑focused enhancements (PDF comparison optimisation, CSS colour parsing, TIFF saving speed, Flex layout compliance), accessibility & compliance upgrades (tagged PDF improvements, PDF/UA fixes, custom ID propagation), and a large set of bug fixes across the entire product suite.

NuGet packages
Aspose.Total – https://www.nuget.org/packages/Aspose.Total/26.4.0
GroupDocs.Total – https://www.nuget.org/packages/GroupDocs.Total/26.4.0
Conholdate.Total – https://www.nuget.org/packages/Conholdate.Total/26.4.0

📦 What’s New

New Features & APIs:
- GroupDocs.Comparison: side‑by‑side and interleaved PDF display modes, PDF page‑range filtering, new PdfCompareOptions class.
- GroupDocs.Merger: continuous page numbering in Word merges, per‑TFM NuGet packaging.
- GroupDocs.Parser: HTML table extraction.
- GroupDocs.Redaction: ODT/OTT support, WebP metadata handling.
- GroupDocs.Viewer: MailMessageViewInfo class, horizontal/vertical DPI settings for spreadsheets, XML‑stylesheet processing.
- Aspose.3D: animation channel exposure, additional animation properties.
- Aspose.BarCode: AllowShortBarcodes option, improved postal barcode engine.
- Aspose.Cells: REGEXEXTRACT/REGEXREPLACE functions, table expansion on copy, ODS decryption support.
- Aspose.Diagram: SVG load format support.
- Aspose.Drawing: Arabic ligature support, multi‑page TIFF saving, memory reduction, codec performance boosts.
- Aspose.Email: Google Calendar handling improvements.
- Aspose.Font: internal refactor of CMap Format 2 handling.
- Aspose.HTML: named @page rules with mixed page sizes.
- Aspose.Imaging: partial GDI rendering, new blending‑mode API.
- Aspose.OCR: integrated table‑detection model (DetectTables API).
- Aspose.PSD: smooth gradient interpolation, updated Aspose.Drawing dependency.
- Aspose.TeX: new Aspose.TeX.Drawing NuGet package.
- Aspose.Words: PDF logical structure custom IDs, funnel‑chart data‑label rendering, leader‑line style support, locale‑aware axis titles, LINQ Reporting Engine error details.
- Aspose.Zip: Apple archive composition with LZ4/LZMA compression, extended 7z codec extraction.
Performance Improvements:
- GroupDocs.Comparison: optimized PDF comparison speed.
- GroupDocs.Viewer: faster CSS colour parsing, XML‑stylesheet support.
- Aspose.Drawing: TIFF saving speed and memory usage improvements, codec performance refinements.
- Aspose.Imaging: numerous rendering and export optimisations.
- Aspose.HTML: Flex layout handling compliance and stability.
- Aspose.Words: LINQ Reporting Engine provides richer error information.
AI & Cloud Enhancements:
- Aspose.OCR: AI‑based table‑detection model integrated with DetectTables API.
Accessibility & Compliance:
- GroupDocs.Viewer: tagged PDF generation fixes for lists, tables, and link semantics.
- GroupDocs.Redaction: full metadata processing for WebP format.
- Aspose.Words: custom node IDs exported to PDF logical structure, multiple PDF/UA‑1 compliance fixes (table headers, list tags, internal links).
- Aspose.Slides: numerous PDF/UA‑1 related bug fixes (table headers, list tags, internal link handling).
Bug Fixes:
- Over 200 bug fixes across the suite, including PDF comparison crashes, Word page‑numbering resets, HTML rendering anomalies, spreadsheet export glitches, barcode recognition errors, chart rendering issues, PDF rendering problems, GIS format attribute bugs, OCR parsing crashes, and many more. (See “What’s New by Product” for detailed per‑product listings.)

📦 What’s New by Product

GroupDocs.Comparison

COMPARISONNET-4732 – Optimized comparison performance for PDF documents
COMPARISONNET-4707 – Pdf with tables cause exception during processing
COMPARISONNET-4733 – Fixed embedded fonts handling logic in PDF comparison
COMPARISONNET-4725 – Ability to produce side‑by‑side PDF comparison result
COMPARISONNET-4731 – Ability to specify pages range for PDF documents comparison

GroupDocs.Merger

MERGERNET-2100 – Migrate to per‑TFM distribution packaging
MERGERNET-2071 – Page number fields restart instead of continuing sequentially when merging Word documents with Continuous mode

GroupDocs.Parser

PARSERNET-2858 – Implement table extraction from HTML

GroupDocs.Redaction

REDACTIONNET-740 – Improve Images Exif data processing
REDACTIONNET-742 – Implement support for Wordprocessing ODT and OTT formats
REDACTIONNET-743 – Implement Webp metadata processing

GroupDocs.Viewer

VIEWERNET‑5608 – Return mail message properties through specialized view info
VIEWERNET‑5640 – Add HorizontalResolution and VerticalResolution for SpreadsheetOptions
VIEWERNET‑5605 – Add support of xml‑stylesheet processing instruction
VIEWERNET‑5624 – Improve CSS color parsing and serialization
VIEWERNET‑4748 – “Could not load file” error for DXF files
VIEWERNET‑4760 – Exception while loading specific DXF file on Windows
VIEWERNET‑5512 – Missing Chinese characters when rendering EML to PDF
VIEWERNET‑5529 – Bad performance for some pages when rendering PDF to HTML/PNG
VIEWERNET‑5571 – GroupDocsViewerException while rendering PPT/PPS
VIEWERNET‑5579 – Row numbers overlap and AutoFit not applied in Spreadsheet HTML
VIEWERNET‑5603 – Winding font not preserved while converting XLS to HTML
VIEWERNET‑5609 – Exception during detection of raw URIs in mail body
VIEWERNET‑5611 – Default font not applied when handling raw URIs
VIEWERNET‑5647 – Cast error with IFC2X3 entity
VIEWERNET‑5377 – UI does not load document with many 404s for /get-page
VIEWERNET‑5623 – UI print loader popup problems

GroupDocs.Watermark

Minor internal improvements for stability and maintainability

Aspose.3D

THREEDNET-1760 – Expose more animation related information
THREEDNET-1757 – Matrix Decompose causes negative scaling (bug fix)
Added Channels collection to BindPoint
Added Owner and BindPoints to Property

Aspose.BarCode

BARCODENET-37951 – Add AllowShortBarcodes to BarcodeReader
BARCODENET-39527 – Improve Postal barcodes recognition engine

Aspose.Cells

CELLSNET-59903 – Support to calculate REGEXEXTRACT function
CELLSNET-59904 – Support to calculate REGEXREPLACE function
CELLSNET-59975 – Support to expand table when copying ranges
CELLSNET-59989 – Decrypt encrypted ODS files (ODF 1.4)
CELLSNET-59964 – Copy one rich value from another workbook
CELLSNET-59976 – Shift formulas after insert‑cut ranges
CELLSNET-60018 – Format a whole row/column of pivot table
CELLSNET-60023 – Export total label of table column to XLS
CELLSNET-59982 – Final punctuation mark missing in PDF output
CELLSNET-60002 – Fail to set font colour for shape
CELLSNET-60005 – Shape.Id changed after save
CELLSNET-59952 – NullPointerException when setting dynamic array formula
CELLSNET-59953 – Array formula with volatile functions not saved properly
CELLSNET-59985 – CalculateFormula fails on chained dynamic array formulas
CELLSNET-60011 – AND function in shared formula calculated incorrectly
CELLSNET-60012 – INDEX function in shared formula calculated incorrectly
CELLSNET-60028 – Defined name with square brackets treated as invalid
CELLSNET-60029 – Setting formula fails with defined name starting with square brackets
CELLSNET-60064 – Cell.StringValue does not apply rich number formatting
CELLSNET-60068 – MAP function returns #VALUE! instead of #CALC!
CELLSNET-59907 – Pillars incomplete when rendering image
CELLSNET-59940 – Chart data labels corrupted with ‘CELLR’ text
CELLSNET-59947 – Missing legend label in PivotChart on ToPdf
CELLSNET-59972 – “Infinity” appears in XPS file
CELLSNET-59986 – Chart legend incorrectly displays series
CELLSNET-59827 – Pivot item indent differs from MS Excel
CELLSNET-59942 – Copying sheets causes issues with TEXTJOIN
CELLSNET-59950 – STOCKHISTORY formula causes circular reference in XLSB
CELLSNET-59955 – Sparklines trend line differs from Excel
CELLSNET-59962 – Lost data source of pivot chart
CELLSNET-59973 – Structured table references corrupted after InsertCutCells
CELLSNET-59983 – Removing first row of a table gives error
CELLSNET-60007 – Issue with AutoFitColumns
CELLSNET-60008 – Extra blank row inserted when pivot table has no grand total
CELLSNET-60044 – Invalid row subheading area after blank rows inserted
CELLSNET-60048 – Enhance style of pivot filter region with pagination
CELLSNET-60066 – Embedded objects become pictures

Aspose.Diagram

DIAGRAMNET-53920 – VST file missing images in PDF output
DIAGRAMNET-53923 – Fails to load Aspose.Drawing.Common assembly at runtime
DIAGRAMNET-53922 – Problem exporting Visio to HTML
DIAGRAMNET-53924 – White strip on left side of PDF when converting VSD→HTML→PDF
DIAGRAMNET-53925 – Text and links mis‑positioned from VSDX to PDF
DIAGRAMNET-53926 – Duplicate chart shapes appear when converting VSD to VSDX
DIAGRAMNET-53931 – PDF content not visible after saving as HTML

Aspose.Drawing

DRAWINGNET-1672 – Added Arabic script ligature support
DRAWINGNET-1675 – Improved multi‑page TIFF saving correctness and performance
DRAWINGNET-1632 – Reduced memory consumption when saving images
DRAWINGNET-1674 – Improved image file codecs performance and correctness

Aspose.Email

EMAILNET-41714 – Correct creation/deletion of Calendars/Calendar List for Google client
EMAILNET-41713 – Exception when adding MapiContact to Deleted Items folder in PST
EMAILNET-41723 – FindAndEnumerateSoftDeletedItems() iteration breaks after exception
EMAILNET-41741 – Unable to parse valid RRULE
EMAILNET-41731 – Corrupt MSG causes OutOfMemoryError

Aspose.Finance

FINANCENET – Implement new features and improvements (general task)

Aspose.Font

FONTNET-876 – Exception while parsing FontDefinition
FONTNET-836 – Incorrect glyph index for character ‘z’
Improved support for cmap Format 2 (high‑byte mapping)

Aspose.GIS

GISNET-2010 – Osm → GeoPackage incorrect attribute name
GISNET-2011 – Osm → Gml incorrect attribute name
GISNET-1977 – Gml → Gml throws exception
GISNET-2000 – GML conversion produces some errors

Aspose.HTML

HTMLNET-6670 – Fixed ArgumentException when processing auto values
HTMLNET-6967 – Improved tagged PDF generation for nested/definition lists
HTMLNET-6957 – Fixed PDF rendering problems with complex borders/paths
HTMLNET-6287 – Enhanced Flex layout handling and standards compliance
HTMLNET-7045 – Fixed tagged PDF link and table‑header semantics for PDF/UA
HTMLNET-6851 – Added support for named @page rules with mixed page sizes

Aspose.Imaging

IMAGINGNET-7906 – Implement partial GDIRendering (Feature)
IMAGINGNET-7986 – Fix bug on export to Pdf for images without own stream
IMAGINGNET-7872 – CDR to WEBP IndexOutOfRangeException
IMAGINGNET-7818 – MemMgr crushes at finalisation
IMAGINGNET-7747 – JPG file colors incorrectly read
IMAGINGNET-4696 – CDR to PDF – Image Loading Failed
Added blending‑mode API (BlendingMode enum, ImageBlendingFilterOptions, etc.)

Aspose.OCR

OCRNET‑1201 – Integrated table‑detection model, added DetectTables API

Aspose.Page

Maintenance release – no changes

Aspose.PSD

PSDNET‑2701 – Implement rendering of Gradient with Smooth method
PSDNET‑2606 – Update Aspose.Drawing to 26.2
PSDNET‑548 – Add support for resource containing effects in a group layer
PSDNET‑2710 – Fix exception for PSD files with adjusted Hue/Saturation

Aspose.Slides

SLIDESNET‑45287 – Accessing IChartSeries.Name.AsCells getter modifies a chart
SLIDESNET‑45331 – Embedded Japanese fonts rendered as garbled text
SLIDESNET‑45345 – Slide layout ColorMapOverride not applied to Master slide shapes
SLIDESNET‑45328 – Dashed lines on a chart displayed incorrectly in PDF
SLIDESNET‑45346 – PptxReadException when loading a PPTX file
SLIDESNET‑45338 – Vertical text incorrectly rotated when converting PPTX to PDF
SLIDESNET‑45252 – PDF/UA‑1 table header options not mapped correctly
SLIDESNET‑45299 – Converting a shape to an image throws NullReferenceException
SLIDESNET‑45251 – Incorrect list tag structure after PowerPoint‑to‑PDF (PDF/UA)
SLIDESNET‑45302 – XPS export breaks layout
SLIDESNET‑45253 – PDF/UA paragraph split into multiple
tags
SLIDESNET‑45329 – Images cause presentation to fail to load
SLIDESNET‑45230 – WordArt objects displayed incorrectly in PDF
SLIDESNET‑44132 – Text layout changed when loading and saving PPT
SLIDESNET‑44130 – Font size increased when loading and saving PPT
SLIDESNET‑45254 – PDF/UA PAC crash on internal links using Named Actions
SLIDESNET‑45177 – Number format of chart data labels changes when converting slide to image
SLIDESNET‑45307 – Legacy 16‑bit WMF file fails to render

Aspose.SVG

Improved rendering of complex borders/paths when exporting SVG to PDF
Handled embedded HTML elements with “auto” layout values without ArgumentException

Aspose.Tasks

TASKSNET‑11701 – Fix recalculation of Actual Work timephased data when changing resource base calendar
TASKSNET‑11699 – Fix incorrect calculation of summary tasks after modifying Task.Finish
TASKSNET‑11698 – Fix incorrect cascading recalculation of ‘% complete’ fields
TASKSNET‑11685 – Fix actual work distribution change when calendar exception added
TASKSNET‑11681 – Fix reading of enterprise extended attribute (type = Cost)
TASKSNET‑11668 – Fix writing of Outline Code values to MPP
TASKSNET‑11590 – Fix assignments alignment after changing task duration
TASKSNET‑11574 – Fix actual work TD corrupted when task calendar modified
TASKSNET‑11158 – Fix MS Project removes split when recalculating project with non‑working split

Aspose.TeX

TEXNET‑556 – Implement Aspose.TeX.Drawing NuGet package based on Aspose.Drawing
Update TeX engine version constants for 26.4
Fix EPS image detection for .NET Framework 3.5 builds

Aspose.Words

WORDSNET‑27718 – Detailed error information for LINQ Reporting Engine
WORDSNET‑28912 – Rendering of data labels for Funnel charts
WORDSNET‑28699 – Preserve Node.CustomNodeId in PDF logical structure
WORDSNET‑29182 – Bookmark end position changes after document comparison
WORDSNET‑29179 – Hang on loading DOCX
WORDSNET‑29172 – Content shifted due to incorrect section margin calculation
WORDSNET‑29164 – LINQ Reporting Engine exception when accessing outer lambda in nested lambda
WORDSNET‑29149 – Remove AI hallucination on “Memory Requirements” page
WORDSNET‑29145 – Discrepancy in word count
WORDSNET‑29141 – Import output from AW in MsoHtml lists differs from MS Word
WORDSNET‑29135 – Import of MsoHtml lists differs from MS Word
WORDSNET‑29130 – InvalidOperationException when iterating Revisions
WORDSNET‑29123 – Leader line colour changed after PDF conversion
WORDSNET‑29119 – Import of MsoHtml lists differs from MS Word
WORDSNET‑29115 – InvalidOperationException during document comparison
WORDSNET‑29114 – StackOverflowException on document save
WORDSNET‑29113 – Import of MsoHtml lists differs from MS Word
WORDSNET‑29111 – Incorrect text position after SVG rendering
WORDSNET‑29104 – Hang on updating fields
WORDSNET‑29102 – Incorrect line spacing after rendering
WORDSNET‑29098 – Comment range lost after comparing documents
WORDSNET‑29089 – Image cropping lost when using HtmlSaveOptions.ScaleImageToShapeSize
WORDSNET‑29088 – Unexpected behaviour of CompareOptions.IgnoreTables
WORDSNET‑29082 – SVG gradient angle incorrect in ‘objectBoundingBox’ coordinates
WORDSNET‑29080 – Paragraph break handling improper on PDF import
WORDSNET‑29076 – Import of MsoHtml lists differs from MS Word
WORDSNET‑29075 – CheckBox form fields lost after loading ODT
WORDSNET‑29069 – Tab stops of list items collapsed incorrectly on MsoHtml load
WORDSNET‑29060 – Cannot access ParentNode for a style revision when converting to ODT/OTT
WORDSNET‑29043 – InvalidOperationException on rendering with ShowInBalloons.FormatAndDelete
WORDSNET‑29042 – Text orientation in table not displayed correctly when converting DOCX to HTML
WORDSNET‑29037 – Part of text missed after rendering
WORDSNET‑29031 – Hang on rendering document
WORDSNET‑28931 – Textbox contents disappear after converting to DOC
WORDSNET‑28876 – Incorrect default axis title names for several cultures
WORDSNET‑28808 – Form fields lost after converting ODT
WORDSNET‑28719 – Document round‑trip loses borders
WORDSNET‑28253 – Hang on rendering document
WORDSNET‑28190 – Expand textboxes generated by PDF reader to XLSX cells
WORDSNET‑28154 – PieChart DataLabels chart‑to‑image issue
WORDSNET‑27267 – Line breaks lost after PDF→HTML conversion
WORDSNET‑24855 – Paragraphs not imported from PDF
WORDSNET‑23625 – Pie Chart Data labels overlap after rendering
WORDSNET‑14284 – RTF→PDF issue with INDEX field rendering
WORDSNET‑29137 – Image rendered as red cross
WORDSNET‑29125 – Mobiliar‑Iconfont rendered improperly
WORDSNET‑29014 – Myriad font loses bold style
WORDSNET‑28765 – TOC field broken after mail‑merge with RemoveStaticFields
WORDSNET‑28723 – Hang on updating fields
WORDSNET‑28514 – NullReferenceException on building report
WORDSNET‑28269 – Horizontal line not rendered on Mac Preview after DOCX→PDF
WORDSNET‑27969 – InvalidOperationException when template contains ‘<’ or ‘>’
WORDSNET‑27584 – InvalidOperationException when creating JsonDataSource with large integer
WORDSNET‑29007 – Issue with dynamic series name for combo chart using LINQ Reporting Engine
WORDSNET‑28299 – DOCX→PDF causes 100 % CPU usage

Aspose.Zip

ZIPNET‑1424 – Compose Apple archive (.aar) with LZ4 compression
ZIPNET‑1426 – Compose Apple archive (.aar) with LZMA compression
ZIPNET‑1422 – Extract codec chain in 7z archive folder
ZIPNET‑1230 – Extract ARM64 and ARM32 codecs in 7z archive folder
ZIPNET‑1423 – Extract BCJ2 codecs in 7z archive folder

🔧 Overall Impact

Performance: PDF comparison is noticeably faster, CSS colour parsing and XML‑stylesheet handling are optimised, TIFF saving and image codec operations see reduced memory usage and higher throughput, and Flex layout processing is now more efficient.
Platform Reach: Per‑TFM NuGet packages broaden .NET version support (including .NET 6‑8 and .NET Framework), and new Apple‑archive support extends compatibility to macOS packaging scenarios.
AI & Cloud: Aspose.OCR introduces an AI‑driven table‑detection model, enabling automatic table region extraction.
Accessibility & Compliance: Tagged PDF generation improvements across Viewer and Words, PDF/UA‑1 compliance enhancements, custom node IDs in PDFs, and comprehensive metadata handling in Redaction strengthen accessibility.
Developer Experience: New APIs (e.g., PdfCompareOptions, MailMessageViewInfo, DetectTables, Apple archive classes) and richer error reporting in LINQ Reporting Engine simplify integration and debugging.

📚 Documentation & Support

Free forum – https://forum.conholdate.com/c/total
Helpdesk – https://helpdesk.conholdate.com
Blog – https://blog.conholdate.com/