Upload your document, let AI detect sensitive data, review every redaction, and export a securely redacted PDF.
Flattened PDFs — no hidden text, no copyable data behind redactions.
Service Agreement
Between and , contract no. shall apply as of .
Contact: ·
IBAN:
Total amount due: .
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Everything you need to safely redact contracts, invoices, IDs and reports — directly in your browser.
Automatically detect names, addresses, payment details, emails and other sensitive information.
Recognize text inside scanned PDFs, JPGs and PNGs — multi-page documents fully supported.
Draw redaction rectangles directly on the document. Move, edit and review every change before export.
Your final PDF is flattened and permanently redacted — no hidden text, no copyable data, no recovery.
Drag in a PDF, JPG or PNG. Multi-page documents are loaded instantly.
OCR reads every page and the AI flags sensitive entities by category.
Toggle categories, remove false positives, or draw your own redaction areas.
Download a flattened PDF where every redaction is permanently burned in.
A black rectangle over text is not redaction. Blackline AI re-renders every page so the original content is physically removed from the exported document.
Pages are re-rendered as flat images before being embedded into the final PDF. The original text behind a redaction never reaches the output file.
All document parsing and rendering happens in your browser. Only the extracted text is sent to the AI for detection.
Final PDFs contain no selectable text, no metadata leaks, and no recoverable layers underneath the black bars.
No account required to try. Process your first document right in the browser.
Start redacting