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How to redact a PDF offline (so the text is really gone)

A black rectangle drawn over text does not remove the text. Anyone can select it, copy it, or delete the rectangle — which is how court filings and government reports have leaked "redacted" names for years. Real redaction removes the words from the file.

Step by step

  1. Open the PDF in PDF Haven (drag it into the workspace).
  2. Choose Redact. Drag a box over anything you want gone.
  3. To find things automatically, type a name or number and click Mark all, or use the presets: Emails, Phone numbers, Card numbers, SSN, Amounts.
  4. Check each page — click a box and press Delete if it covers too much.
  5. Click Redact & download. Every page with a box is rebuilt as an image, so no text survives on it, and document info such as author and title is removed.
  6. PDF Haven re-opens the new file and shows the check: how many characters remain on the redacted pages (it should say 0) and whether your search term still appears anywhere.

PDF Haven — Edit, sign and redact PDFs without uploading them. Free core tools, Pro trial with no card.

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Why pages become images

Text inside a PDF is stored as drawing instructions with the letters attached. Cutting a few words out of those instructions safely is hard, and many tools get it wrong. Rebuilding the marked page as a picture of itself, with the black boxes already burned in, is the simple, verifiable way: there is no text left to find. Pages you did not mark stay exactly as they were — sharp and searchable.

Test any redacted PDF yourself

  1. Open the PDF and press Ctrl+A (⌘A on a Mac) on the redacted page, then copy and paste into a text editor. If the hidden words appear, the redaction failed.
  2. Use the viewer's search (Ctrl+F) for a word you redacted.
  3. Check File → Properties for the author name and title.

See also: how to check whether a PDF redaction is safe.

Why do it offline?

You redact a document because it holds something sensitive. Uploading it to a website to hide that information defeats the purpose. PDF Haven does the whole job inside your browser.

FAQ

Is redaction free?
Redaction is part of PDF Haven Pro. You can try it free for 7 days without entering a card.
Will the redacted pages still be readable?
Yes. They are rebuilt at 150, 200 or 300 dpi — you choose — so they look the same on screen and in print. Only the text can no longer be selected or searched.
Does it work on scanned PDFs?
Yes. Scans have no text to search, so draw the boxes by hand; the result is rebuilt the same way.

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