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Redaction fails in practice when people draw a black box over text and the words stay underneath, selectable and copyable. Doclium deletes the characters themselves, so there is nothing left to recover.

How to redact a PDF

1Upload the PDF containing the sensitive text.
2Enter the words or phrases to remove.
3Confirm, then download the redacted document.

Questions people ask

Is the text really gone, or just covered?

Really gone. The characters are removed from the file, so they cannot be selected, copied or recovered.

Can redaction be undone?

No, which is the point. Doclium confirms before applying it.

Does it also update the AI index?

Yes. The document is re-indexed so the assistant cannot quote text you removed.

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Everything you can do, in one place

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Free to use No account, no signup, no payment.

Encrypted in transit Your library is private to your device. Privacy policy.

Answers you can check Every AI answer cites the page it came from.

Works everywhere Install it as an app on phone or desktop.

The PDF toolkit that reads your documents too

Doclium is a free web app for working with PDFs: merge, split, compress, rotate, protect and convert them in your browser, with no install and no signup to start. Where most PDF tools stop at the file, Doclium also reads it — ask a question and get an answer that cites the page it came from, so you can check it.

Chat with a PDF, summarise a long report, or translate one into another language. Clean documents up with OCR, redaction, watermarks, headers and footers, page numbers and A4 or Letter resizing. Every change can be undone, and every export is previewed before it downloads.

Private by default Your library is yours alone. Documents are scoped to your account or device and are never readable by another user.

HTTPS everywhere All traffic is encrypted in transit with TLS. Your files are not used to train AI models.

Answers with citations The assistant quotes the passage and page behind each answer, so nothing has to be taken on trust.

Free to use The tools are free, with no watermark added to your output and no account needed to begin.

Open a document to read it here. Ask a question and the cited pages are highlighted.

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