How to Redact a PDF: Black Out Text Permanently [2026]

Answer first: to redact a PDF, open the free redact tool, mark every piece of sensitive text, apply burn-in redaction, and download. True redaction deletes the underlying characters — drawing black boxes over text in a normal editor does not, and the hidden text can still be copied out.

Redaction vs black highlight: the critical difference

Method	Text recoverable?	Safe to share?
Black rectangle / highlight in an editor	Yes — select, copy, or delete the shape	No
True burn-in redaction	No — characters removed from the file	Yes

Public redaction failures — court filings, police reports, corporate leaks — almost always trace back to covered-but-present text. If the characters still exist in the file, assume they will be found.

How to redact a PDF (the safe workflow)

Make a copy of the original and redact the copy — keep the unredacted file secured separately.
Open the PDF redact tool and upload the copy.
Mark every instance: names, SSNs, account numbers, signatures, addresses. Search the document for each term so no occurrence hides on page 47.
Apply burn-in redaction and download the result.
Verify: try selecting the blacked areas, Ctrl+F the sensitive terms, and confirm nothing is found.

What to redact: a checklist

Identity: Social Security numbers, dates of birth, ID numbers, signatures.
Financial: bank accounts, routing numbers, salary figures not meant for the recipient.
Contact: home addresses, personal phone numbers, minor children's names and schools.
Hidden layers: metadata, comments, tracked changes, and embedded attachments that may carry the same data.

After redacting

Redacted files are ready to share — optionally add a watermark like CONFIDENTIAL, compress for email limits, or add a password when the remaining content is still sensitive. Each step runs locally in your browser, so the unredacted original never travels anywhere.

Common mistakes that leak redacted data

Covering instead of burning: shapes, highlights, and image overlays preserve the text underneath.
Missing one occurrence: redact every instance of a name or number, including headers, footers, and exhibits.
Forgetting metadata: author fields, comments, and form data can restate what the body redacted.
Sharing the wrong file: label the redacted copy clearly (e.g. contract-REDACTED.pdf) before sending.

Conclusion

If it is not burned out, it is not redacted. Do it properly with the free PDF redaction tool — permanent, private, no signup.

Frequently Asked Questions

How do I black out text in a PDF permanently?

Use a true redaction tool: mark the text, apply redaction to burn it out of the file, then download. Proper redaction removes the underlying characters — drawing black boxes in an editor does not.

Is drawing a black rectangle over text the same as redacting?

No — and this is the most dangerous PDF mistake. A black shape just covers text that can still be selected, copied, or revealed. Real redaction deletes the characters and cleans metadata.

What should I redact in a legal or rental document?

Social Security numbers, bank account numbers, dates of birth, signatures, minor names, addresses, and any exhibit pages not relevant to the recipient. When unsure, redact more rather than less.

Does redaction change the rest of the document?

No. Pages, layout, and unmarked content stay identical. Only the marked regions are burned out.

How do I verify a redaction worked?

Try selecting and copying the blacked area, search the PDF for the sensitive term, and check file metadata. If nothing surfaces, the burn-in held.

Should I redact or just password protect?

Different jobs: passwords control who opens a file, redaction controls what anyone who opens it can see. For court filings and public records, redact — then optionally lock as well.