All tools
Redact PDF
Black out sensitive content permanently. The text underneath is removed.
Choose a fileLoading the tool…
Black out names, account numbers or anything confidential. Unlike drawing a black box, ModifyPDF flattens redacted pages so the underlying text is really gone.
How to redact a PDF
- Choose your PDF.
- Drag over each area you want to hide.
- Click “Redact & download”.
Frequently asked questions
Can the redacted text be recovered?
No. Pages with redactions are converted to images with the areas blacked out, so the original text is removed from the file.
What happens to pages without redactions?
They are kept exactly as they were, with selectable text.
Are my files uploaded to a server?
No. ModifyPDF processes files with JavaScript inside your browser. Your documents never leave your device, and nothing is stored after you close the page.