# Release Notes for Version 6.1.0

DsExcel is a Document Solutions product that offers a comprehensive library to create, manipulate, convert, and share Microsoft Excel-compatible spreadsheets.

## Content

## Enhancements from the Previous Release

* Added support for SpreadJS .sjs file format.
* Added export options in the ToImage() method.
* Added Copy and Move methods to copy or move multiple sheets at once.
* Added support for the XLTX file format.
* Added support Form Controls on SpreadJS JSON I/O.
* Added support for the allowResize property on SpreadJS JSON I/O.

## Resolved Issues

* Fixed exception thrown on adding calculated items in Pivot Field.
* Fixed the performance of Workbook.fromJson() method is bad when JSON contains stripped style in big tables.
* Fixed the bad calculating performance when the sheet contains the SUMPRODUCT formula.
* Fixed the incorrect axis position of the chart in the exported PDF file.
* Fixed exception thrown on loading a particular Excel file with a chart.
* Fixed the calculated formula of the table column is lost in the exported SSJSON file.
* Fixed missing 3D chart in the exported PDF file.
* Fixed the incorrect result of the MATCH function.
* Fixed the incorrect result of the COUNT function.
* Fixed the incorrect overflow of cell value in the exported PDF file when the cell value type is text and has customer number format.
* Fixed the incorrect result of some functions when they refer to 3D references.
* Fixed exception thrown on exporting a PDF file when the workbook contains a combo chart whose category axis has a null value in the workbook.