Redact PDF Online Free — Remove Sensitive Data

Permanently black out confidential regions before sharing. Positions are percentages, boxes are baked in, and files never upload.

Free forever · No watermark · No signup · Files never leave your device. Use it right below — the interactive tool loads with this page.

How to use Redact PDF

Is redaction reversible?

No — boxes are baked permanently into the file. Always keep an unredacted original.

Should I do anything after redacting?

Yes. Run Flatten PDF too, so no hidden layer or selectable text remains beneath the boxes.

Why do this offline?

Redaction is for your most sensitive documents — processing locally means they are never exposed to a server.