Every Word document you create is quietly building a record about you. Long after you've finished writing, the file carries hidden details about who wrote it, when, on which machine, and sometimes even what was written and deleted along the way.
What Metadata Does a DOCX File Contain?
A DOCX file is actually a ZIP archive containing multiple XML files. Among those files, three store metadata specifically:
docProps/core.xml— author name, last modified by, creation date, modification date, revision countdocProps/app.xml— application name and version (e.g. "Microsoft Office Word"), company name from your Office licence, total editing time in minutes, word count, page count, template namedocProps/custom.xml— any custom document properties set by you or your organisation
The "Last Modified By" Problem
One of the most commonly overlooked fields is Last Modified By. Even if a document was originally authored by someone else, this field updates to your name every time you save it — silently logging that the file passed through your hands.
Editing Time
The Total Editing Time field tracks how many minutes Word has been open with that document. This can reveal how much attention you gave a document, which may be professionally or legally relevant.
Company Name
If you installed Microsoft Office with a corporate licence, your company name is typically embedded in docProps/app.xml. Sharing a document externally can expose this.
Real-World Risks
Legal discovery: In litigation, metadata is discoverable. Timestamps and author fields have been used to challenge document authenticity and expose unauthorised edits.
Journalism and whistleblowing: Several high-profile leaks have been traced back to document metadata revealing who prepared or accessed a file.
Competitive intelligence: Sharing a proposal with a client may also share your internal revision history, word count, and editor names.
How to Remove Metadata from a DOCX File
Option 1: PrivMeta (No Upload, Fully Private)
PrivMeta removes all three metadata XML files from your DOCX in-browser:
- Visit PrivMeta
- Drop your
.docxfile into the upload area - Click Remove metadata
- Download the cleaned file
The document content, formatting, and structure remain completely intact. Only the hidden metadata files are removed.
Option 2: Microsoft Word's Built-In Inspector
Word has a Document Inspector that can find and remove metadata:
- Go to File → Info → Check for Issues → Inspect Document
- Select the categories you want to inspect (Document Properties, Hidden Text, etc.)
- Click Inspect, then Remove All next to each category
Limitation: Word's inspector may miss some fields and requires you to trust Microsoft's implementation. It also doesn't work on files you open briefly without saving.
Option 3: Manual Inspection
Because DOCX is a ZIP format, you can open it with any ZIP utility and delete the docProps/ folder manually. This is what PrivMeta does programmatically.
What Does a Cleaned DOCX Look Like?
After processing with PrivMeta:
docProps/core.xmlis removed — no author, dates, or revision countdocProps/app.xmlis removed — no application name, company, or edit timedocProps/custom.xmlis removed — no custom properties- The document body, styles, images, and formatting are untouched
Who Should Clean DOCX Metadata?
- Legal professionals sharing documents with opposing counsel or courts
- Freelancers sending proposals to clients
- Journalists protecting source identities
- Businesses sharing templates or contracts externally
- Anyone submitting documents for academic or public review
Try It Now
Strip hidden data from your Word documents — free, private, and completely in your browser.