Redact PDF

What is Redact PDF?

True PDF redaction permanently removes sensitive information from a document: it does not merely draw a black rectangle over the text. Drawing a black shape over text leaves the underlying characters in the PDF data stream, where they can be selected, copied, or revealed by anyone who removes the shape in a PDF editor. Our redaction tool physically deletes the content beneath the black marks and replaces it with an opaque fill, making recovery impossible.

Why use this tool?

True content deletion rather than visual overlay. Removes text objects, image data, and form field values from the PDF structure beneath the redaction marks: not just the rendered appearance. The redacted zones are filled with solid black and the underlying data is gone from the file. Works on text, images, and mixed content regions. All processing is in the browser for maximum privacy.

Common use cases

Required whenever you must share a PDF that contains information you cannot disclose: personally identifiable information (PII) in legal discovery documents, confidential figures in a partially public financial report, patient names in a medical case study, classified information declassified only in part, or personal details in a contract shared with a third party who should not see them.

How to use Redact PDF

1. 1Upload the PDF containing sensitive content
2. 2Draw redaction marks over any text, number, name, or image region you need to hide
3. 3Review the marked areas: marks can be repositioned or resized before applying
4. 4Click "Apply Redactions" to permanently remove the underlying content
5. 5Download the redacted PDF and verify by trying to select text in the blacked-out areas

Frequently asked questions

Is this true redaction or just a black overlay?

True redaction. After applying, the content under the black marks is physically removed from the PDF data stream. The black fill is a new PDF drawing object; below it is empty space, not hidden text. Selecting the blacked-out area in any PDF reader returns nothing: there is no text or image data remaining.

Can redacted information be recovered?

No. True redaction permanently deletes the content. Unlike a black highlight or annotation (which is removable), applied redaction modifies the underlying PDF structure. The original characters are no longer stored anywhere in the file. This is the same standard used by government agencies, law firms, and healthcare providers for FOIA and HIPAA compliance.

Can I redact images as well as text?

Yes. The redaction tool works on any content region: text, graphics, photos, and embedded images are all permanently removed when you draw a mark over them. This is important for documents with photos of people or locations that must be anonymized.

What is the difference between redacting and deleting a page?

Deleting a page removes the entire page content. Redacting removes specific regions within a page while preserving everything else on it. Use page deletion (available in our PDF Organizer) when the entire page is sensitive. Use redaction when only portions of a page need to be removed.

How do I verify the redaction worked correctly?

After downloading the redacted PDF, open it in any PDF reader (Adobe Acrobat, Chrome, or Preview) and try to click and select text in the blacked-out areas. If true redaction was applied, the cursor will find no text to select. You can also open the file in a text editor and search for the redacted terms: they should not appear in the raw file content.

Can I redact metadata like author name and creation date?

Document metadata (author, creation date, software used) is stored separately from page content and is not automatically cleared by page-level redaction. Use our Remove Metadata tool after redacting page content to also clean the document properties before sharing.

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