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Redact PDF Online Free – Black Out Sensitive Text

Permanently black out sensitive content in your PDF. Pages are flattened so hidden text is completely unrecoverable. Free, no upload, 100% private.

Drop a PDF here or

Files never leave your browser

How it works

  1. Upload your PDF
  2. Click and drag to draw black boxes over sensitive content on each page
  3. Navigate pages with the arrows to redact multiple pages
  4. Click Apply & Download to save the permanently redacted PDF

Note: Redacted pages are flattened to images, so underlying text is completely removed and unrecoverable. Output file size will be larger than the original.

When to use Redact PDF

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Personal data

Permanently blacking out sensitive personal information (names, addresses, SSNs) before sharing documents

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Business secrets

Redacting confidential business data, trade secrets, or proprietary information from legal documents

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Public disclosure

Sanitizing PDFs before public release under freedom of information or data disclosure regulations

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Legal discovery

Removing classified or privileged information from documents before discovery in legal proceedings

How to redact a PDF — Step by Step

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Upload your PDF

Drag and drop your PDF onto the tool

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Select content to redact

Click and drag your mouse over the text or areas you want to black out

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Adjust redactions

Reposition or resize redaction boxes as needed before finalizing

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Apply redactions

Click "Apply Redactions" to permanently remove the covered content

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Download the redacted PDF

Save the sanitized document

Frequently Asked Questions

🔏 Is redaction reversible?

No. Once you apply redactions, the covered content is permanently removed from the PDF. The black boxes cannot be undone or removed to reveal the underlying text. Always keep a backup of the original file.

🔍 How is redaction different from covering text with a black shape?

True redaction removes the underlying text data from the PDF, not just visually covers it. Simply drawing a black box over text doesn't remove it — the text can still be copied or extracted. Our tool permanently deletes the covered content.

✏️ Can I redact multiple areas on the same page?

Yes, you can add as many redaction boxes as needed on each page. Each box is applied independently.

📄 Does redaction work on scanned documents?

Yes. On scanned PDFs, the redaction box covers the image area permanently. The visual content underneath is replaced with black.

🔒 Private Files never leave your browser — processed 100% locally on your device.