How does it work? Reads file with FileReader, parses with SheetJS, extracts first sheet, converts to CSV string.

1. Click "Upload XLSX File" and select your file, or drag and drop a file onto the area.
2. The data from the first sheet of your Excel file will be converted to CSV and displayed.
3. You can then copy the CSV data or download it as a file.

• Extracting data from Excel for scripting.
• Converting reports to plain text.
• Batch processing spreadsheets.

• Reads .xlsx and other spreadsheet formats.
• Converts the first worksheet into CSV data.
• Provides options to copy or download the resulting CSV.

Reverse of CSV to XLSX, extracting cell values to delimited strings. Handles types like dates by stringifying.

All calculations and data processing for this tool are performed locally in your browser. We do not send any of your data to our servers, ensuring your information remains private and secure.