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Redact PDF

Redact PDF permanently removes sensitive content by covering the selected region and rasterising the page, which destroys the underlying text so it cannot be selected, copied or recovered.

About Redact PDF

Nearly every publicised redaction failure has the same cause. Someone draws a black rectangle over a name or an account number in a general-purpose editor and publishes the file. The rectangle is just a shape sitting above the page, and the original text is still there in the content stream, so anyone can select it, copy it out or extract it with a script in seconds. The document looks redacted and is not.

This tool takes a different route. It applies the covering block and then rasterises the page, converting it to an image in which the hidden characters no longer exist as text. There is a real trade-off, and we would rather state it than bury it: the redacted pages become image-based, so text is no longer selectable or searchable. Run OCR on the output afterwards if you need a searchable file.

How to redact pdf

  1. Upload the document containing the information you need to remove.
  2. Mark each region or term to redact, then review your selections carefully.
  3. Click the redact button to cover the regions and rasterise the pages.
  4. Download the file and confirm the text cannot be selected or copied.

Why use this tool

Text genuinely destroyed

Rasterising the page removes the characters underneath the block, so there is nothing left in the file to select, copy or extract with a script.

Not just a black box

Ordinary editors draw a shape over text that stays fully intact beneath it. That gap causes most real redaction leaks, and this tool closes it.

Honest trade-off

Redacted pages become image-based, so run OCR afterwards if you need searchable text. We say so plainly rather than leaving you to discover it.

Frequently asked questions

Is drawing a black box over text enough to redact a PDF?
No, and this is the single most common redaction mistake. A drawn rectangle is a graphic above the page; the text underneath remains in the file and can be selected, copied or extracted programmatically. Every reader still has the words. Only removing or destroying the text itself counts as redaction.
Can the redacted text be recovered from my file?
Not from the rasterised region. Once the page is converted to an image, the characters no longer exist as text anywhere in the document, so there is nothing to extract. Verify it yourself: open the output, try to select over the block, and search for a redacted term.
Why does my document become an image afterwards?
Because that is what makes the redaction real. Rasterising flattens the page into pixels, which removes the underlying text layer along with the sensitive characters. It is the mechanism, not a side effect, and it is the reason the result holds up where a drawn box does not.
How do I get searchable text back?
Run OCR on the redacted output. OCR reads the visible pixels and rebuilds a text layer, so the document becomes searchable again while the redacted areas stay blank, since there is nothing there to read. Do this after redaction, never before.
Will the file get larger?
Usually yes, because image pages carry more data than text pages. A dense scan can grow noticeably. If size matters, compress the output afterwards, but check the redacted areas still look right, and never trade away the redaction itself for a smaller file.