Every Word, Excel and PowerPoint file carries a small properties block that most people never open: who created it, who last saved it, the company and manager fields from the template it started in, when it was revised and how many times — plus, often, a thumbnail image of the document. This tool clears those properties without touching the document itself, so the file still opens normally.
Engine
File API
Runs in
Web Worker
Needs account
No
The properties live in `docProps/`, a handful of small XML parts beside the actual document. The table lists the ones that identify a person or an organisation.
Author and last-modified-by are the account names from the machine that saved the file. Send a CV to a recruiter and it may name a second employer; send a contract template and it may name the client whose copy you started from.
These fields come from the Office template rather than from anything you typed. They survive “Save As”, they survive converting to PDF in some tools, and nobody looks at them before forwarding a document outside the company.
Office writes a small preview image into the package. If the document was edited after the preview was generated — a redacted name, a deleted slide — the old version can still be in that thumbnail. It is removed here along with the properties.
The usual advice is “File → Info → Check for Issues → Inspect Document”, which is buried three menus deep, only exists in the desktop app, and is easy to forget. Two drags here produce the same result on any machine with a browser.
Drop a DOCX, XLSX or PPTX file into the panel. It is read in a Web Worker on your device.
Check the property list. Author, company and thumbnail are the fields that usually matter.
Download the cleaned file and open it once in Office or LibreOffice to confirm it still opens without a repair prompt.
Before you rely on it
Removing the property parts outright would leave the package relationships pointing at files that no longer exist, and Word would offer to repair the document. This tool replaces each property part with a minimal valid one instead, so every relationship still resolves and the file opens normally — the difference between a cleaned file and a corrupted one.
Yes. All three formats use the same package structure and the same docProps parts, so the same adapter cleans them. The panel accepts all three and the report names the type it detected.
It should, and the package structure is unchanged apart from the four property parts. Test the cleaned copy before deleting the original, as with any file editor — especially if the document was produced by an unusual tool rather than Office.
Because they are content, not metadata. Deleting comments changes what the document says, so this tool reports them and leaves them alone. Use Word’s own review tools to accept or remove them.
No, deliberately. A signature covers the package contents; changing them invalidates it. If you need the properties gone, remove the signature first, then rewrite the file.
No. The ZIP is opened, the property parts are replaced and the archive is rebuilt in a Web Worker on your device. Nothing is sent to a server, and there is no endpoint that accepts a file.