Redact Credit Card Numbers from PDFs
Luhn-validated detection of Visa, Mastercard, Amex, and other PAN formats — across digital and scanned documents.

Try for free

Select the PII types to redact, then upload your document. No account required.

Select information types to redact

Drop your file here

PDF, JPG, or PNG (max 5MB)

Select File

*Security first: Your files are securely processed and deleted immediately. Create an account to manage your files, PII and retention settings. This demo only processes the first page. Create an account for full document processing.

Credit cards and PCI-DSS

A primary account number (PAN) on a credit card is highly regulated under PCI-DSS. Storing or sharing PANs outside a PCI-compliant environment can trigger contractual penalties from card networks and trigger breach-notification obligations.

When to mask credit card numbers

Any document containing a full PAN that is shared, archived outside scope, or attached to an email should have the PAN redacted — typically leaving only the last 4 digits visible if needed.

  • Receipts and expense reports
  • Cardholder dispute documentation
  • Audit and reconciliation packets
  • Customer support transcripts and email exports

Luhn algorithm validation

Every potential card number is validated using the Luhn checksum before being flagged. This dramatically reduces false positives on similar 13–19 digit strings (account references, order numbers).

How it works

  1. 1

    Upload receipts, statements, or transcripts

    Batch processing supported — handle hundreds of files at once.

  2. 2

    Select "CreditCard" detection

    Combine with Name, Email, Phone, and Address categories.

  3. 3

    Studio review

    Verify detections page-by-page. Add manual masks for any handwritten card numbers.

  4. 4

    Download the redacted PDF

    Card numbers are permanently rasterized over.

For finance and operations teams

Operational receipts and expense documentation often contain PANs that should never leave your PCI-DSS boundary. Redact them in bulk before archiving.

Frequently asked questions

Does it support Visa, Mastercard, Amex, and Discover?

Yes. All major PAN formats (13, 15, 16, 19 digits) are validated via Luhn.

Can I keep the last 4 digits visible (PCI-style)?

Not automatically — the full detection is masked. For a "last 4 visible" pattern, post-process the redacted output manually.

Will it false-positive on long invoice numbers?

Luhn validation eliminates most false positives, but very occasionally a random 16-digit number passes Luhn. Studio review catches these.

Ready to redact PII with simplicity?
Gain accuracy and speed compared to Adobe Acrobat and other redaction tools.