Securely redact a PDF
What Securely redact a PDF actually does
A black rectangle is not a secure redaction when the words remain selectable underneath it. This workflow finds exact phrases and common sensitive-data patterns, makes every proposed region reviewable, supports manual boxes for scans, then rasterizes each page with the chosen areas burned to black. The downloaded PDF is reopened and must contain zero extractable text before it is released.
How to use it
- Enter exact phrases or choose email, SSN, phone, Luhn-valid card, or IPv4 patterns.
- Review the highlighted pages, ignore false positives, and drag manual boxes over scans or split text runs.
- Download an image-only redacted PDF plus a JSON report after the browser verifies no text remains extractable.
Useful for
- Remove account details, contact information, identifiers, or client names before sharing.
- Redact image-only scans by drawing manual regions directly on each page preview.
- Avoid the common failure where a visual black bar leaves the underlying text copyable or searchable.
Limits worth knowing
- Secure browser output intentionally discards all source text, links, forms, attachments, metadata, and accessibility structure.
- A phrase split across separate PDF text runs may not match automatically and needs a manual box.
- Automated patterns can have false positives or miss unusual formats; every page must be reviewed.
Questions people ask
Is drawing a black box over PDF text secure?
Not by itself. An overlay can leave the original text or image data in the file. This browser tool creates new rasterized pages with the selected regions burned into their pixels, then verifies the result has no extractable text.
Will the redacted PDF still be searchable?
No. Removing all source text is the browser workflow's security boundary. The local CLI performs object-level redaction and can preserve unredacted searchable text.
Does the file leave my device?
No. Matching, page rendering, redaction, verification, and download happen locally in this tab.