Blackline.AIStart

Redact tax documents online

Mortgage advisors, ex-partners or auditors may need parts of your tax return. Blackline AI removes tax ID, dependants and specific line items while keeping the rest verifiable.

Open the editor Pricing

What gets redacted

  • Tax ID / NI / SSN
  • Dependants and family details
  • Specific income lines
  • Bank account / IBAN
  • Home address and date of birth

How it works

  1. 1Drop your file into the editor – PDF, JPG or PNG.
  2. 2The AI scans every page and classifies sensitive items into categories.
  3. 3Toggle categories on/off, fine-tune or draw your own boxes.
  4. 4Export a flat, non-recoverable PDF in one click.
Permanent redaction

Black bars are baked into a flattened image – the text underneath cannot be copied, searched or recovered.

Runs in your browser

OCR, rendering and export happen on your device. Only extracted text is sent to AI for classification.

GDPR-friendly by design

Files are never stored on our servers. Close the tab and the document is gone.

Multi-page & scans

Works with multi-page PDFs and scanned images thanks to built-in OCR.

FAQ

Can the bank verify a redacted tax document?+

Yes – key totals can stay visible while personal identifiers are removed.

Does it work for German Steuerbescheid?+

Yes, including Steuer-ID, eTIN and Steuernummer.

Multiple pages supported?+

Yes – every page is analyzed in parallel and exported as one PDF.

Will the redacted PDF be a valid legal copy?+

It will be a valid redacted copy. Originals must still be kept for tax archiving.

Start redacting now

Free for 3 documents per month. No signup needed to try.

Open the editor All use cases