THE FEUTEX TOOLKIT

XLSX Workbook Inspector and Exporter

Inspect XLSX worksheets or export their values as CSV, JSON or a ZIP of separate CSV files. Choose delimiters and formula-safe CSV output.

Spreadsheets workspace● Runs in your browser

Settings & output options

Worksheet name (blank = first)Neutralize formula-like CSV textCSV separatorUTF-8 BOM for spreadsheet compatibilityExport formatInclude hidden sheets in ZIP

01 Your input

Choose local files

Reorder selected files below when order matters.

02 Your result

Your result

How to use this tool

Choose local files or paste the sample input.
Select the output options and run the tool.
Review the result and download generated files.

Accuracy and scope

Files are processed in browser memory. Maximum 25 MB total input and 100 files. XLSX import supports unencrypted .xlsx only and uses cached formula results. Exports contain values, not workbook formatting. CSV-to-XLSX stores all cells as text. Export limit: 50,000 rows and 200 columns. Complex workbooks may require more memory.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.

Settings and output choices

ZIP exports visible sheets by default; explicitly enable hidden sheets if needed. ZIP mode ignores the single-sheet name. Maximum 100 sheets and 1 million cells total, with 50,000 rows and 200 columns per sheet. Formulas use cached results, not recalculation. Workbook formatting is not retained.