Redact PDF
Drag boxes over anything you want hidden. We paint solid black rectangles over those regions.
Drop your PDF here, or click to browse
PDF up to ~100 MB · stays on your device
Updated 2026 · Maintained by the CrispPDF team
Black rectangles alone don't redact—anyone can copy hidden text underneath. CrispPDF's Redact tool draws opaque boxes AND permanently removes the underlying text from the PDF stream. What's gone is gone.
Upload the document, draw boxes over sensitive information (account numbers, names, addresses), and click Redact. The output is safe to share—no hidden data remains.
For Indian users sharing bank statements with only transaction totals visible, true redaction protects account numbers. For HR departments sending salary slips externally, it hides employee IDs or addresses.
Because processing happens in your browser, sensitive documents never leave your device. After redacting, explore related tools: compress the file for email, flatten annotations, or password-protect the result.
// How to use
How to use Redact PDF
- 1
Upload the PDF
Drop the document that contains sensitive names, numbers, or signatures.
- 2
Draw redaction boxes
Drag black rectangles over anything you need to remove — text underneath is deleted, not just covered.
- 3
Apply redactions
Click Redact. CrispPDF strips the underlying text stream so redacted content can't be recovered.
- 4
Download the redacted PDF
The safely-redacted PDF downloads — suitable for court filings, FOIA, or public sharing.
// Why CrispPDF
Why use CrispPDF for redact pdf?
CrispPDF runs entirely in your browser — your files never touch a server. No signup, no watermarks, no daily limits, no upsells. We built it because every other PDF site is slow, ad-stuffed, or hides the good features behind a paywall. CrispPDF is fast on a phone, fast on a laptop, fast on a 10-year-old machine. Output is byte-clean: signatures stay sharp, compressed PDFs stay readable, conversions preserve layout where the source allows. And because nothing leaves your device, even confidential documents are safe to process. Bookmark this page, share it with your team, and stop juggling five different PDF sites for five different tasks.
- No signup, no email gate
- No watermarks on output
- Files never stored on a server
- Works on phone, tablet, and desktop
// FAQ
Redact PDF — frequently asked questions
+How to hide my account number on a PDF statement?
Draw a redaction box over the account number, click Redact, and download. The text is permanently removed.
+Is redaction permanent?
Yes. CrispPDF deletes the underlying text—not just covers it visually.
+Can someone remove the black box later?
No. The original text is stripped from the PDF stream entirely.
+How do I properly black out text in a PDF?
Use CrispPDF's Redact tool—it removes text, not just overlays a box.
+Can redacted text be uncovered or copied?
No. True redaction deletes the data; there's nothing left to uncover.
+Is this redaction tool completely secure?
Yes. Processing is local, and the text is removed—not hidden—from the output.