Redact PDF — Permanently Black Out Text, Free and Private

Black out names, account numbers or anything else for good. Search for text or draw boxes; what is underneath is removed from the file, not just covered.

Local Processing — No PDF Upload Required
Now on iOS

Quick facts: Redact PDF

Price
Free, no limits
File upload
None. Files are processed in your browser
Account
Not required
Watermark
None
Input
PDF
Output
PDF
Works on
Windows, macOS, Linux, ChromeOS, iPhone, iPad, Android

Privacy Guaranteed

Unlike other tools, we do NOT upload your files to a server. All processing happens in your browser, so your bank statements and private IDs stay on your computer.

True redaction: the content under the boxes is removed from the file.
Find & mark every match of a name or number across all pages.
No upload — confidential files never leave your device.

How to Redact PDF

  1. Select your PDF or drag it into the upload area. All pages open on screen.
  2. Type a word, name or number and click "Find & mark" to box every match, or drag over any area to draw a box yourself.
  3. Check the boxes. Click one to remove it, or use Undo.
  4. Click "Apply redactions" and download the redacted PDF.

About Redact PDF

Redaction That Actually Removes the Content

A black rectangle drawn on top of a PDF is not a redaction: the text underneath can still be selected, copied and searched. This tool removes it.

How It Works

Every page you redact is turned into a flat image with the black boxes burned in. The original text, images and drawings of that page are not copied into the new file at all, so there is nothing left to uncover. Pages without redactions stay exactly as they were, with selectable text.

Find Every Mention at Once

Search for a name, an email address, an ID or account number, and every match on every page is boxed for you. Add more boxes by dragging over signatures, photos, stamps or anything else.

Remove Hidden Details Too

By default the document's title, author and other properties are removed as well, since they often reveal what was redacted. Links that pointed into redacted pages are dropped.

Good to Know

Text on redacted pages can no longer be selected or searched. If you need it searchable again, run the result through our OCR tool.

Private by Design

The redaction happens entirely in your browser with pdf.js and pdf-lib. Your confidential document is never uploaded.

Frequently Asked Questions

QHow do I redact a PDF for free?

Open PDFMerger.io/redact-pdf, select your PDF, search for the text to hide or drag boxes over it, and click "Apply redactions". It is free, with no sign up and no watermark.

QIs the redacted text really gone?

Yes. Each redacted page is rebuilt as an image with the boxes burned in, and the page's original text and objects are left out of the new file. It cannot be copied, searched or recovered from the output.

QWhy can't I select text on redacted pages anymore?

Because the page is now an image. That is what makes the redaction safe. Pages without boxes keep their normal text. Use our OCR tool if you need the redacted pages to be searchable again.

QCan I redact the same name everywhere at once?

Yes. Type it in the search box and click "Find & mark". Every match on every page gets a box, and you can review them before applying.

QIs my PDF uploaded?

No. Everything happens in your browser, and your file never leaves your device.