Clear the author, company, and revision trail from a workbook and verify it's gone.
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Select an .xlsx file. Document properties are parsed locally.
Review creator, last-modified-by, company, title, timestamps, and custom properties.
Export a cleaned copy with identity fields removed.
The output is reparsed to confirm the fields are gone.
The cleaned file is reparsed and all targeted property fields are read back; verification passes only when they are absent or empty.
Typically your name (creator and last-modified-by), your organisation's name, creation and modification timestamps, total editing time, and the exact application version — enough to identify the source of a 'anonymous' spreadsheet.
Select the .xlsx file, review its creator, last-modified-by, company, and custom properties, then export the cleaned copy. The tool reopens that copy and only marks it verified when the targeted identity fields are absent or empty.
No. The file is opened with your browser's File API and processed by code running in your tab. You can confirm this yourself: open your browser's developer tools, watch the Network panel, and process a file — no request carries your file's bytes. See our How it works page for a step-by-step verification guide.
The same local tool, preconfigured for a specific job.
Technical guidance, limitations, and safer workflows related to this tool.
A spreadsheet you're about to share can contain entire sheets you can't see, formulas pointing at internal data, and identity metadata. Where Excel hides data and how to audit a workbook before it leaves your hands.
9 min read · Reviewed August 2026
Inventory hidden and very-hidden sheets, hidden rows/columns, defined names, hyperlinks, and comments.
Fresh values-only rebuild: no formulas, comments, links, hidden sheets, macros, or document properties.
Inspect Info-dictionary and XMP metadata, clear it, and verify the export is clean.