Released: Apr 10, 2026

Updates in V26.4

Features

• Added support for the REGEXTEST function.
• Added the ability to detect the file format of encrypted ODF 1.4 files.
• Added support for decrypting encrypted ODS files with ODF 1.4 specification.

Fixes

• "CellsException: Corrupted file. (ExceptionType.IO)" on Workbook constructor when using incorrect password for ODS/OTS files.
• XLOOKUP returns incorrect result when mixing TEXT and BOOLEAN values.
• The settings for individual data points affected the 'NumberFormat'.
• Some shapes missing in Excel...

Released: Mar 13, 2026

Updates in V26.3

Fixes

• Excel shape with curved text path converts to straight path when converted into an image.
• Custom number format using Arabic locale is not formatted as expected.
• The page break is wrong while converting workbook to PDF.
• HTML to Excel rowspan issue.
• Excel to HTML export: Fixed panes partially covered after scrolling.
• Incorrect picture rotation in Excel-to-HTML conversion.
• Cast Exception while saving workbook meta data.
• NumberFormatException while opening workbook.

Released: Feb 11, 2026

Updates in V26.2

Features

• Added support for object streams in the generated PDF.

Fixes

• Formula cell value is read "#VALUE!".
• Waterfall chart Data labels are not getting removed.
• Excel to HTML conversion - Content has some orphan "</style>" tags.
• Difference in formula calculations by Aspose.Cells formula calculation engine compared to Excel.
• "#VALUE!" for formula cells in template file was read as "#UNKNOWN!".

Released: Jan 14, 2026

Updates in V26.1

Features

• Added support for using a smart expression as a variable of another smart expression.
• Implemented JSON arrays with personalized styles to a single cell in Smart Markers.
• Support for embedding XLS image for WPS compatibility.
• Support for converting an embedded image from XLS to XLSX.

Released: Dec 12, 2025

Updates in V25.12

Features

• Added support for the PERCENTOF function.
• Added support for AES-128 for PDF encryption.
• Added support for XREF stream in the generated PDF.

Fixes

• The data bars are missing when the HTML file (generated by Aspose.Cells) is inserted into an empty Word document via Aspose.Words for Java.
• Exception occurred when saving file to HTML and calling formula calculation.
• CellsException occurs when saving file to PDF.
• Exception "The custom criteria of auto filter could not be null" when loading the...

Released: Nov 13, 2025

Updates in V25.11

Features

• Added support for smart expression as variable of another smart expression.

Fixes

• Could not handle JSON array as Single cell for Smart Markers in CSV/XLSX using Aspose.Cells.
• Horizontal smart marker parameter does not shift right smart marker.
• Unsupported token for Array when using if condition in smart markers.
• Invalid detail sheet if smart detail worksheet is not the first.
• Process the smart markers after smart detail worksheet.
• Null Exception is thrown if DetailSheetNewName is...

Released: Oct 14, 2025

Updates in V25.10

Features

• Added support for filtering by nephew conditional smart marker.

Fixes

• Proportion issue for group of picture.
• Image distorted in Excel to PDF transformation.
• Incorrect conditional formatting when saving file to PDF.
• Issue with missing cell border when hiding rows in Excel template.
• The original data in the template has been overwritten when multiple ranges are placed in the same column.
• Font is wrong when converting Excel file to HTML.
• The stacked bar type can not be set for series when...

Released: Sep 11, 2025

Updates in V25.9

Features

• Added support for PHONETIC formula.
• Added support for repeating worksheets when processing smart markers.
• Removed unnecessary redundant data when loading sample file.
• Added support for Master-Detail smart markers.
• Added support for dynamic array formula for dynamic formulas in smart marker.
• Reduced generated SVG file size while converting to SVG with font embedded.

Fixes

• Need to use new WorkbookDesigner(workbook) unnecessarily to make variables processing work.
• "if" parameter works only...

Released: Aug 13, 2025

Updates in V25.8

Features

• Added support for changing theme colors for chart series.

Fixes

• Difference in HTML output.
• Incorrect text line spacing after rendering Excel to PDF.
• Fonts in text boxes that refer to cells are distorted.
• TEXTSPLIT function was not spilled correctly when the text is multiple rows/columns.
• Aspose.Cells formula calculation engine results differ from Excel 365.
• The width of the line rendered with the circle diameter is smaller than the diameter of the circle.
• The font used in EMF image is...

Released: Jul 10, 2025

Updates in V25.7

Features

• Added support for ShiftType.NONE when calling Cells.insertCutCells method.

Fixes

• The text box border line is not a multiple line, but a single line.
• Mini image/sparkline displayed incompletely in merged cells - Excel to HTML conversion.
• Wrong retrieval of the isAlignmentApplied() flag on the custom style.
• The result file crashes due to macro exception information when converting XLS to XLSX.