# Import and Export Excel Files on Client-Side
## Content
You can import an Excel file (.xlsx) to JSON and export a JSON object to Excel with the import and export methods on the client-side.
The exported Excel file is locked since the file is from the Internet. The Excel export occurs client-side, not from the server. Downloading on the client-side causes the file to be locked. When you first open the excel file, warning text is displayed.
`` is required to view the widget properly. Also, users need to reference the `gc.spread.excelio.*.*.*.min.js` file to import and export excel files.
You can download the Excel file locally or get the returned Excel file (type: blob) to post it to a server.
The following methods are available with the Excel import and export:
* [open](https://developer.mescius.com/spreadjs/api/excelio/classes/Excel.IO-1#open)
* [save](https://developer.mescius.com/spreadjs/api/excelio/classes/Excel.IO-1#save)
The following table lists the features that are imported or exported from or to an Excel file.
| Category | Description | Import (excel to JSON) | Export (JSON to excel) |
| -------- | ----------- | ---------------------- | ---------------------- |
| workbook(spread) | tabstrip: tabStripVisible, startSheetIndex, tabStripRatio, tabColor | √ | √ |
| | scrollbar: showHorizontalScrollbar, showVerticalScrollbar | √ | √ |
| | sheets: sheet visible, sheet name | √ | √ |
| | Reference style: R1C1 or A1 | √ | √ |
| | custom name | √ | √ |
| sharedStrings | the string used for sheet data (common string, string with white spaces) | √ | √ |
| theme | color scheme | √ | √ |
| | font scheme (SpreadJS has no detailed fonts) | √ | √ |
| | format scheme (SpreadJS has no format schemes) | X | √ |
| style | cellStyles: all SpreadJS supported styles | √ | √ |
| | different formats (formats used in tables, conditional formats, and filters) | √ | √ |
| | tableStyles | √ | √ |
| worksheet | rowRangeGroup, colRangeGroup | √ | √ |
| | rowCount and columnCount | √ | √ |
| | showZeros | √ | √ |
| | gridline visible, gridline color | √ | √ |
| | row header and column header visible | √ | √ |
| | zoom | √ | √ |
| | selections | √ | √ |
| | activeRow, activeColumn | √ | √ |
| | freeze (frozenRowCount, frozenColumnCount) | √ | √ |
| | default rowHeight, default columnWidth | √ | √ |
| | columnInfo: column width, column visible, column style | √ | √ |
| | merged cells (span) | √ | √ |
| | protected sheet | √ | √ |
| | rowInfo: row height, row visible, row style | √ | √ |
| | cellInfo: cell value, cell formula, cell style | √ | √ |
| | custom name | √ | √ |
| | conditional format | √ | √ |
| | comment | √ | √ |
| | picture | √ | √ |
| | slicer | √ | √ |
| | sparkline | √ | √ |
| | table | √ | √ |
| | filter | √ | √ |
| | validation | √ | √ |
| | outline | √ | √ |
| | print | √ | √ |
## Using Code
This example opens and saves an Excel file. The first section of the code lists the dependencies for the client-side import and export.
```HTML
```
```HTML
SpreadJS V11 Client Side ExcelIO
```