AI-powered · Pattern matching · Zero upload
Tool — AI Redaction

Redact Sensitive Data

Automatically detect and permanently blackout PII — emails, phone numbers, Aadhaar, PAN, passport numbers, dates of birth, bank accounts, and more. Click to refine, then download. All local, all private.

⚠️ Redaction is permanent and irreversible. The original text is replaced by black boxes in the output PDF — it cannot be recovered. Always keep a copy of the original.
Click to choose or drag a PDF here
Scanned or text PDFs · Local only · Free

How to use the Redact Sensitive Data tool

PDFZero permanently redacts text such as names, emails, and phone numbers from a PDF using AI-assisted detection — entirely inside your browser. Unlike simply drawing a black box over text (which can often still be selected or copied underneath), proper redaction removes the underlying content. No upload, no trace, no signup.

Steps

  1. Click the drop zone above and choose the PDF you want to redact.
  2. Let the AI-assisted detection highlight likely sensitive data, or manually select text/areas to redact.
  3. Confirm the redactions you want applied.
  4. Download the redacted PDF — the original text underneath is permanently removed, not just visually covered.

Why use this tool?

Sharing a PDF often means removing personal information first — names, emails, phone numbers, account numbers, or other identifying details. True redaction (not just a black box) prevents that information from being recovered by copying text or examining the file.

Frequently asked questions

Does redaction just draw a black box over the text?

No. Proper redaction removes the underlying text content, not just visually hides it — this prevents someone from selecting or copying the redacted text out from underneath.

Can the AI detection miss sensitive information?

Automated detection helps surface likely candidates (emails, phone numbers, names) but isn't guaranteed to catch everything — review the document yourself before sharing redacted files for anything sensitive.

Is my document uploaded for AI processing?

No. Detection and redaction both run locally in your browser; your document is never sent to a server.

Can I manually redact areas the AI didn't catch?

Yes, you can manually select and redact any additional text or regions beyond what was automatically detected.

Is this tool free?

Yes, redaction is free to use with no signup required.