⬛ Redact PDF

Redact PDF draws opaque black rectangles over anything you drag across and bakes them into the saved file. This is visual redaction: the underlying text can still exist in the PDF structure, so for sensitive documents run the result through a flatten or print-to-PDF step afterwards. Everything stays on your device.

  • PriceFree, no signup
  • MethodOpaque black boxes
  • UploadNever — local
  • OutputRedacted-looking PDF

Redaction in practice — know the boundary

You hideWhat actually happensExtra step for safety
A name or amountBlack box baked onto the pageText may survive underneath
A whole paragraphBox covers it visuallySame caveat applies
Regulated / legal contentVisual cover onlyFlatten or print-to-PDF after
Metadata and commentsNot touched by boxesReview file properties too
Many areas on many pagesDrag per page, navigation built inCheck each page before saving
Copy-paste protectionNot guaranteedTrue removal needs re-authoring
✅Black out sensitive information in PDFs
🎯Hide personal data before sharing
🔒100% private — runs in your browser

Detailed User Guide

Black boxes hide content visually

The tool draws opaque black rectangles over the areas you select. The underlying text can still exist in the PDF structure, so this is visual redaction — for regulated documents, follow up with a flatten or print-to-PDF step.

Draw a box over each area to hide

Drag over names, numbers or paragraphs and the tool bakes an opaque black rectangle into the saved PDF at that exact position.

Check for hidden data before sharing

Redaction here targets visible content. Review the final PDF for metadata, comments, and hidden text if the document must be fully sanitized.

Local processing means the redaction stays private

Everything runs in your browser, so sensitive records never pass through a third-party server.

Verify the result carefully

Open the redacted PDF and search for the terms you meant to remove to confirm they are gone — this final check is essential for legal documents.

Frequently Asked Questions

The tool draws opaque black rectangles over the selected areas, making them invisible. The underlying text data may technically still exist in the PDF structure. For maximum security, flatten the PDF or use a print-to-PDF step after redaction.
Redaction preserves the document layout while hiding specific information. It's ideal for legal, medical, and financial documents where you need to share most of the content but hide sensitive details.
No! This is our key advantage. All redaction happens locally in your browser. Your sensitive document never leaves your device — unlike server-based tools that require uploading.
Yes — black rectangles are burned into the PDF, covering underlying content.
Yes — draw as many redaction rectangles as needed.
No. All processing happens locally in your browser using pdf-lib and pdf.js.
There is no hard limit. Very large PDFs (100MB+) may slow down your browser.

Redact PDF: Black out sensitive information in PDFs

Redact PDF lets you black out sensitive information in pdfs. Upload a PDF and get a redacted PDF — all processed locally in your browser, with no uploads and no sign-up.

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Hide personal data before sharing

Hide personal data before sharing. This is one of the most common reasons people reach for Redact PDF — and it handles the job in seconds, entirely in your browser.

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Redact confidential sections

Redact confidential sections. This is one of the most common reasons people reach for Redact PDF — and it handles the job in seconds, entirely in your browser.

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Protect privacy in legal documents

Protect privacy in legal documents. This is one of the most common reasons people reach for Redact PDF — and it handles the job in seconds, entirely in your browser.

Everything You Need in a Redact PDF

Powerful features that make Redact PDF fast, private, and free.

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Instant Processing

PDFs are processed in your browser the moment you upload.

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100% Private

Your PDFs never leave your device — no server uploads.

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Text-Based Output

Conversions produce real, searchable, selectable text.

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All-in-One PDF Suite

Merge, split, edit, annotate, convert — 25+ PDF tools.

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Free Forever

No sign-up, no watermarks, no page limits.

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Cross-Platform

Works on Windows, Mac, Linux, iOS, and Android.

How to Use

1

Upload the PDF

Add the document containing the sensitive information you need to hide.

2

Select the areas to redact

Draw black boxes over the names, numbers, or text you want to remove.

3

Apply the redaction

The tool strips the text and images beneath the boxes, producing a genuinely safe document.

4

Download and verify

Save the redacted PDF, then open it and search for the terms you meant to remove to confirm they are gone.

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100% Private
Files never leave your browser
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Browser-Based
No installs, no uploads
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Free Forever
No sign-up, no watermarks
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No Signup
Start instantly, no account