Remove Author and Hidden Data From Word, Excel, and PowerPoint Files
Every Office document carries invisible metadata embedded by the application — your full name in the author field, your company name, a revision counter showing how many times you edited the file, the total hours you spent working on it. This data travels with the document every time you email it, upload it to a portal, or share it as an attachment.
The Office Metadata Remover strips these identity-revealing fields from DOCX, XLSX, and PPTX files while leaving the document content — text, formatting, charts, slides, formulas — completely intact. The output is a clean copy ready to share.
What Gets Removed
The remover targets the fields in docProps/core.xml anddocProps/app.xml that are most likely to identify you or reveal internal information:
- Author — the name of the person who created the document
- Last Modified By — the name of whoever last saved the file
- Last Printed — the date and time the document was last printed
- Company — the organisation name from the Office installation
- Manager — the manager name from Office account settings
- Template — the template filename used to create the document
- Revision Count — reset to 1 (was: the actual number of saves)
- Total Editing Time — reset to 0 (was: cumulative hours of editing)
What Is Preserved
Everything else in the document remains unchanged:
- All document content — text, images, tables, charts, formulas, slides
- Document title, subject, keywords, and description (if set)
- Creation and modification timestamps
- Page count, word count, and other structural statistics
- Application name and version
- All embedded fonts, styles, and formatting
Why Revision Count Matters
The revision field increments every time you press Save. A document with revision 1 was saved once — typically a final clean export. A document with revision 83 reveals extensive editing history, even though Word doesn't store the individual revision snapshots in the modern format. In commercial negotiations, legal contexts, or anonymous submissions, a high revision count can signal uncertainty, extensive back-and-forth, or that the document is not a first draft. Resetting it to 1 eliminates that signal.
How the Remover Works
DOCX, XLSX, and PPTX files are ZIP archives containing XML. The remover uses JavaScript to unzip the file, locate the docProps/core.xml anddocProps/app.xml entries, surgically clear the target fields in those XML files, and repack the ZIP. The document content — stored in separate XML files likeword/document.xml — is not touched.
This approach means the output file opens and behaves identically to the original in Word, Excel, PowerPoint, LibreOffice, and Google Docs.
How to Use the Office Metadata Remover
- Drop your file — drag a DOCX, XLSX, or PPTX onto the upload area, or click to browse.
- Remove metadata — click the Remove Metadata button. Processing is instant for most files.
- Review the report — the result screen shows exactly which fields were cleared and the before/after file size.
- Download the clean file — the output filename has a
-cleansuffix so the original is not overwritten.
Common Use Cases
- Sending proposals or contracts — remove your name, company, and revision history before sending documents to clients or counterparties.
- Uploading to portals — tender portals, grant applications, and job application systems often instruct applicants to remove identifying information from documents for blind review.
- Publishing templates — strip author and company data from template files before distributing them publicly.
- Confidential reports — remove internal identifiers before sharing reports with external parties.
Privacy and Security
Your document is never uploaded to any server. The entire process runs in your browser using JavaScript — the file is unzipped in memory, the XML is modified, and the result is repacked and offered as a download. No document content is transmitted, logged, or stored. Closing the tab discards everything.
Related Tools
Other NoFileUpload tools for document privacy:
- Office Metadata Viewer — inspect exactly what metadata is embedded before cleaning.
- PDF Metadata Remover — strip author and timestamps from PDF documents.
- PDF Metadata Viewer — check what is hidden inside PDF files.