Author & company
The name on your operating system account and, often, your employer or client's company name — visible to anyone who checks the file's properties, even if you never typed it in.
Remove Hidden Metadata From PDF, Word & Excel Files
Every PDF, DOCX, PPTX, and XLSX you send carries the author's name, the company, the software used, and often a full edit history — none of it visible until someone checks. Blindfold strips it all, entirely in your browser. Nothing is ever uploaded.
What your document reveals without you knowing
Creation software & version
Whether the file came from Adobe Acrobat, Microsoft Word, Google Docs, or Canva — and sometimes the exact version, which can reveal your internal tooling to a client or competitor.
Full revision history
Word, Excel, and PowerPoint files can retain a record of every edit — who made it and when — plus tracked changes and comments that are technically still in the file even when not displayed.
Creation & modification timestamps
Exact dates and times the file was created and last touched, which can contradict a story you'd rather the document not tell.
One proposal is all it takes
Send a client a PDF proposal and its metadata can quietly reveal your internal editor's name, the software your agency runs, and exactly when the document was last touched — details you never meant to disclose. It happens by default; almost nobody strips it before hitting send.
Your document never leaves your device
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Open DevTools' Network tab while cleaning a file. You'll see zero upload requests — the whole process runs locally.
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Blindfold uses Web Workers, a browser technology that runs code in an isolated thread on your own device.
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Especially relevant for confidential documents — nothing is ever transmitted to any server, ours or anyone else's.
Free for images. $5/month unlocks documents.
Free
- ✓ JPEG, PNG, WebP images
- ✓ 10 files per day, no account
Pro — $5/month
- ✓ PDF, DOCX, PPTX, XLSX support
- ✓ Author, company & revision history removed
- ✓ Batch clean up to 50 files → one ZIP
- ✓ Downloadable Privacy Report PDF
Frequently asked questions
What metadata does a PDF actually contain?
Author name, company, the software used to create or last save it, creation and modification dates, and a producer/generator string — plus, for many workflows, an internal revision history. Blindfold shows you the exact values before removing them.
Does removing metadata change how my PDF looks or reads?
No. Metadata is entirely separate from the document's visible content. Removing it does not alter text, layout, images, or page count — the file looks and behaves identically, it just no longer carries hidden author and system data.
Can I clean Word, PowerPoint, and Excel files too?
Yes — DOCX, PPTX, and XLSX are all supported on Blindfold Pro, alongside PDF. Office files typically carry more than PDFs do: author, company, last-modified-by, full revision history, and sometimes tracked changes or comments that are still technically present even if hidden from view.
Do I need Adobe Acrobat to remove PDF metadata?
No. Acrobat Pro's 'Remove Hidden Information' does the same job, but it's a paid desktop app. Blindfold does it in a browser tab, free to see what's in the file, with removal included in the $5/month Pro plan.
Is it safe to use an online tool on a confidential document?
Most online metadata removers work by uploading your file to their server, process it, and send it back — which means a confidential document briefly exists on someone else's infrastructure. Blindfold never uploads anything: the file is read, cleaned, and rebuilt entirely inside your browser's memory using Web Workers.
Can I clean multiple files at once?
Yes. Pro accounts can batch-clean up to 50 files in one pass and download them as a single ZIP — useful for a folder of client proposals or a batch of scanned contracts before archiving.