Free Document Redactor — Black Out Sensitive Info Locally

✓ Auto-detect SINs, SSNs, emails, credit cards
✓ Manual draw-to-redact regions
✓ Redact PDFs & images
✓ Scrub document metadata
✓ Export as flat non-editable PDF
✓ 100% local — no uploads

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Document never leaves your browser. The exported PDF is fully rasterized — underlying text data is permanently removed, not just covered.

📂 Load Document

PDF or image (PNG, JPG, WebP)

🕵️

Drop file here

PDF, PNG, JPG, WebP

🔍 Auto-Detect

Select which patterns to automatically redact

✏️ Manual Redact

Draw rectangles over anything you want to redact

Switch to Draw mode to manually select regions.

🗂️

Load a document to start redacting

Auto-detection will highlight sensitive patterns immediately

Frequently Asked Questions

What sensitive information can be auto-detected?

The auto-detection engine recognises Social Insurance Numbers (SINs), Social Security Numbers (SSNs), email addresses, credit and debit card numbers, and phone numbers using pattern matching. It works on both PDF text content and image files.

Is redaction permanent and secure?

Yes — redacted content is replaced with solid black rectangles before export. The exported PDF is a flat, non-editable document; original text under redacted areas cannot be retrieved by selecting, copying, or searching the PDF.

Can I redact images (not just PDFs)?

Yes — you can upload image files (JPG, PNG, WebP) and draw redaction regions manually over sensitive areas. The output is a flat image with the selected regions permanently blacked out.

What metadata is scrubbed?

The tool removes standard PDF metadata fields including document title, author, subject, keywords, creator, producer, and creation/modification timestamps. This prevents inadvertent disclosure of personal or organisational information embedded in the file.

Is my document uploaded anywhere?

No — everything runs in your browser using pdf.js, PDF-lib, and the HTML5 Canvas API. Your documents are never transmitted to any server. Processing is entirely local, making this tool suitable for sensitive legal, medical, and financial documents.