Spreadsheet Editor includes a built-in AI Assist that lets users perform operations using natural language through a chat-based interface. With prompt suggestions and a resizable panel, users can efficiently interact with the Spreadsheet and take actions.
AI-powered actions, such as editing, formatting, data analysis, and visualization, are performed directly in the Spreadsheet with full undo and redo support. When a prompt is submitted, the AI service interprets the intent and applies the corresponding actions instantly, with results displayed in the UI and confirmed in the AI Assist panel.
Subscripts and superscripts - Subscript and superscript formatting enables the styling of specific portions of text within a cell. Directly format selected text during cell editing, enhancing clarity and improving the readability of complex data.
Suspend and resume UI refresh - Suspend and resume refresh API options improve UI rendering efficiency during bulk operations. Previously, the UI refreshed after every action, such as editing cells, which could impact performance when executing multiple operations in sequence. With this enhancement, UI updates can be temporarily paused using the suspendRefresh() method. Multiple programmatic changes can be performed efficiently, followed by a single refresh triggered with the resumeRefresh() method. This approach minimizes unnecessary re-rendering and significantly improves performance, especially during initialization, data processing, or large-scale updates.
Blazor Spreadsheet Editor
Ribbon customization - Improved the spreadsheet experience with advanced ribbon customization. Add new tabs, create custom groups, and use tailored controls that align the interface with specific workflows. Existing tabs, groups, and items can be enhanced by inserting, rearranging, or removing elements while maintaining a consistent, intuitive user experience. These capabilities are supported by a simple, developer-friendly API that enables seamless configuration and integration.
Conditional formatting - Enhance data visualization by applying conditional formatting to selected ranges to highlight trends, outliers, and key values. Use color scales, data bars, and icon sets to deliver intuitive, engaging visuals, and ensure formatting updates dynamically as data changes to maintain accuracy.
Export to XLS, CSV, and PDF - Export spreadsheets in XLS, CSV, and PDF formats for seamless sharing and cross-platform compatibility while preserving data accuracy and formatting. PDF exports offer customizable layout options, including settings such as fitting the sheet onto a single page and adjusting orientation. These capabilities are available through both the UI and a simple, developer-friendly API.
Auto aggregation - Perform quick calculations in selected ranges using the spreadsheet footer's aggregation feature. It provides instant access to sums, averages, counts, and more without writing formulas. As data changes, results update automatically.
Enhanced API support - The capabilities of spreadsheet applications have been extended with powerful new API methods and properties. These additions enable developers to perform advanced operations, customize user interactions, and configure spreadsheet behavior.
API methods:
AddDefinedNameAsync: Adds named ranges to the workbook with configurable scopes.
CalculateAsync: Triggers immediate formula recalculation at the workbook, worksheet, or sheet index level.
ClearAsync: Clears contents, formatting, hyperlinks, or all aspects from specified ranges.
DisableContextMenuItems: Disables specified items in the context menu while keeping them visible.
EnableContextMenuItems: Enables specified items in the context menu for user interaction.
GetDisplayText: Returns the formatted, user-visible text representation of a cell based on its address.
OpenAsync: Opens spreadsheet files from streams asynchronously, supporting multiple formats.
ProtectSheetAsync: Applies protection to worksheets in the workbook.
Redo: Reapplies the most recently undone action.
RemoveContextMenuItems: Removes specified items from the context menu entirely.
RemoveDefinedNameAsync: Removes existing named ranges from the workbook.
SetColumnWidthAsync: Sets the width of specified columns programmatically.
SetRowHeightAsync: Sets the height of specified rows programmatically.
Undo: Reverts the most recent action in the spreadsheet.
UnprotectSheetAsync: Removes protection from worksheets in the workbook.
API properties:
AllowDelete: Enables or restricts sheet deletion functionality.
AllowInsert: Enables or restricts row, column, and sheet insertion functionality.
AllowOpen: Enables or disables the ability to open spreadsheets via UI and programmatic methods.
AllowSave: Enables or disables the ability to save or download spreadsheets.
AllowTextWrap: Controls text wrapping behavior within cells.
AllowUndoRedo: Enables or disables undo and redo functionalities.
CalculationMode: Determines how and when formulas are recalculated, supporting automatic and manual modes.
EnableKeyboardNavigation: Enables or disables keyboard navigation within the spreadsheet.
EnableKeyboardShortcut: Enables or disables keyboard shortcuts for common actions.
ShowAggregate: Shows or hides aggregate values in the footer section of the spreadsheet.
ShowSheetTabs: Shows or hides the sheet tabs for navigating among sheets and managing sheets via UI.
Syncfusion Essential Studio Spreadsheet Editor SDK 2026 Volume 1 SP1 (33.2.15)23 jun 2026
Correcciones
Blazor Spreadsheet Editor
Fixed an issue where the Blazor Spreadsheet height did not properly recalculate during browser window resize.
Syncfusion Essential Studio Spreadsheet Editor SDK 2026 Volume 1 SP1 (33.2.3)21 abr 2026
Funciones
Web Spreadsheet Editor (JavaScript, Angular, React, Vue, ASP.NET Core & MVC)
Introduced support for custom function categories in the spreadsheet Insert Function dialog. Users can now create new categories, associate custom functions with them, and add category descriptions for better organization and discoverability.
Correcciones
Blazor Spreadsheet Editor
Fixed an unhandled exception that occurred when dynamically updating the Blazor Spreadsheet data source with corrupted or zero byte Excel files.
Syncfusion Essential Studio Spreadsheet Editor SDK 2026 Volume 1 (33.1.46)31 mar 2026
Correcciones
Blazor Spreadsheet Editor
Fixed an exception that occurred when loading a corrupted or unsupported Excel file in the spreadsheet.
Syncfusion Essential Studio Spreadsheet Editor SDK 2026 Volume 1 (33.1.45)24 mar 2026
Funciones
Web Spreadsheet Editor (JavaScript, Angular, React, Vue, ASP.NET Core & MVC)
Added support for creating charts from discontinuous ranges (multiple non-adjacent rows, columns, or cell blocks). Linked charts now update automatically when any referenced range changes. Supported chart types include column, bar, area, pie, donut, line, and scatter.
Server-side import efficiency: Improved core server-side file import processes to reduce memory usage and speed up processing of large Excel workbooks.
Correcciones
Web Spreadsheet Editor (JavaScript, Angular, React, Vue, ASP.NET Core & MVC)
Stability has been improved by addressing bugs affecting clipboard workflows, conditional formatting, data validation accuracy, image placement and rendering, import/export processing, and formula calculations, resulting in greater reliability, compatibility, and user productivity.
Syncfusion Essential Studio Spreadsheet Editor SDK 2026 Volume 1 (33.1.44)Versión principal16 mar 2026
Funciones
Web Spreadsheet Editor (JavaScript, Angular, React, Vue, ASP.NET Core, and ASP.NET MVC)
Discontinuous chart range support - Users can now create charts from multiple non-adjacent rows, columns, or cell blocks for greater flexibility when visualizing selective or scattered data. Linked charts automatically update whenever any referenced range changes. This capability is fully supported across major chart types, including column, bar, area, pie, donut, line, and scatter.
Improved file import efficiency - Core server-side processes for file imports have been refined to improve memory efficiency and faster performance, ensuring a smoother experience when working with large Excel workbooks. This optimization is especially beneficial for complex files that include advanced styling, formatting, and rich content structures, enabling more reliable handling of heavy datasets with reduced resource usage.
Enhanced clipboard behavior - Clipboard operations now retain formatting, formulas, and cell references when copying or moving data across worksheets. It reduces transfer-related errors and ensures pasted content fully preserves user intent, even in complex multi-sheet workflows.
Improved conditional formatting logic - Conditional formatting now evaluates rules accurately and updates consistently as data changes. It eliminates rendering mismatches and ensures that formatting rules visually respond to edits in real time for a clearer, more reliable data presentation experience.
Enhanced data validation experience - Data validation has been improved to provide immediate and precise responses when invalid values are entered. This helps users avoid input mistakes and maintain data accuracy, and supports cleaner, integrity-focused data entry across all workflows.
Refined formula calculation experience - Formula processing has been upgraded with more robust error handling and behavior aligned closely with Excel for commonly used functions. These address argument-related edge cases, resulting in predictable, reliable, and consistent calculations.
Blazor Spreadsheet Editor
Optimized undo and redo performance - The undo and redo mechanism in the Blazor Spreadsheet Editor has been optimized to handle extensive formula sets more efficiently, delivering faster operations and a more responsive user experience.
Enhanced open and save behavior - File open and save operations now align better with Excel. These preserve images, gridlines, text validation, table headers, password protection, and named ranges during round-trip workflows, resulting in fewer visual discrepancies, data inconsistencies, and protection failures for more reliable file handling.
Improved worksheet management - Now provides intuitive sheet insertion, protection enforcement, and consistent API behavior. Enhancements include sheet manipulation such as insert/delete/move/duplicate actions when protection is enabled, offering more predictable organization, enhanced workbook security, and a smoother multi-sheet experience.
Enhanced row and column insertion - Row and column insertion has been improved for more predictable, Excel-aligned results. Row heights adjust correctly, formulas and named ranges remain intact, inserted rows remain visible after filtering, images reposition smoothly, name box updates accurately, and hyperlinks stay preserved during insertions.
Visual Studio Code Extension
Syncfusion Spreadsheet Editor SDK Extension - Visual Studio Code - Syncfusion's Spreadsheet Editor SDK Extension for Visual Studio Code enables developers to create Blazor applications with advanced Spreadsheet Editor components, no dependency on Microsoft Office or other external tools. It includes ready-made project templates and Blazor-specific code snippets, helping new users get started quickly with pre-built, powerful spreadsheet features.
Syncfusion Essential Studio Spreadsheet Editor SDK 2025 Volume 4 SP1 (32.2.9)10 mar 2026
Correcciones
Blazor Spreadsheet Editor
Enhanced editing responsiveness in the Blazor Spreadsheet for WebAssembly (WASM), resolving noticeable delays when modifying cell values.
Syncfusion Essential Studio Spreadsheet Editor SDK 2025 Volume 4 SP1 (32.2.8)3 mar 2026
Correcciones
Blazor Spreadsheet Editor
Fixed an issue where dynamic updates to the datasource property were not reflected in the spreadsheet.
Syncfusion Essential Studio Spreadsheet Editor SDK 2025 Volume 4 SP1 (32.2.3)5 feb 2026
Funciones
Blazor Spreadsheet Editor
Added support for applying cell formatting programmatically via the CellFormatAsync method. This enhancement enables developers to customize cell styles using a CellFormat object, including:
Background color.
Font color.
Font size.
Font family.
Font weight.
Font style.
Text decoration.
Horizontal alignment.
Vertical alignment.
Formatting can be applied to a specified cell range or the current selection, providing greater flexibility and control over spreadsheet styling.
Correcciones
Web Spreadsheet Editor (JavaScript, Angular, React, Vue, ASP.NET Core & MVC)
Issue with "cell values containing large decimal values not rounding correctly when a number format is applied" has been resolved.
Syncfusion Essential Studio Spreadsheet Editor SDK 2025 Volume 4 (32.1.23)13 ene 2026
Correcciones
Blazor Spreadsheet Editor
Fixed an issue where selection became misaligned when importing an XLSX file.
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