Redact PDF Documents

Black out personal data, account numbers, and sensitive details from your PDF instantly and permanently.

Choose PDF or drag & drop

Instructions: Click and drag on the pages below to draw black redaction boxes. Once done, click the redact button.

Flattening redaction layers...

Secure Information Redaction

When sharing documents for public record or multi-party review, protecting sensitive data is mandatory. Our **Redact PDF** tool allows you to permanently mask specific areas of your document. By drawing black boxes over PII (Personally Identifiable Information), you can safely share your work without exposing account numbers or private names.

Security First: Local Redaction

At **PDF MASTER TOOLS**, we respect your data. Our redaction engine runs **entirely in your browser**. We never see your documents or your redactions, and they are never stored on any server.

Frequently Asked Questions

Can someone remove the black boxes?
Our tool flattens the document, merging boxes into the content layer. Recovery is virtually impossible.
Does this cost money?
No. PDF MASTER TOOLS is 100% free with no registration.
Is there a limit on file size?
The limit is based on your browser's memory. Most systems handle several dozen pages easily.
Does this tool work on mobile devices?
Absolutely. Our redaction canvas is touch-compatible for tablets and phones.