Does this read my data?
No. It reports the workbook properties, not cell contents.
Inspect the hidden properties of an Excel workbook: creator, last modified by, company, category, keywords and timestamps. Spreadsheets circulate widely, and these fields circulate with them. It is free, needs no account, and adds no watermark to your result.
The XLSX package properties are parsed and reported as JSON. Sheets, formulas and cell values are read-only and unmodified.
No. It reports the workbook properties, not cell contents.
The creator is whoever first made the file; last-modified-by is whoever saved it most recently. In shared workbooks these are usually different people.
Use Remove Excel Metadata, which clears them while preserving sheets and formulas.
Remove common core properties from XLSX workbooks while preserving sheets, formulas and cell data.
Inspect Word document title, subject, author, keywords, comments, revision and date properties as JSON.
Inspect PowerPoint core properties including title, author, subject, keywords, comments and revision data.
Convert Excel worksheets to CSV with sheet selection and UTF-8 output.