100% client-side processing
Your data never
leaves your device.
BlacklineDocs detects and redacts PII from your PDFs entirely in the browser. No uploads. No servers. No risk.
Drag and drop a PDF to get started
Built for privacy-first document handling
Client-side only
Your PDF never leaves your browser. All processing happens locally using WebAssembly and JavaScript.
Instant detection
Automatically finds emails, SSNs, phone numbers, and credit card numbers using pattern matching.
Clean redaction
Draws permanent black rectangles over sensitive data. The original text is removed from the output PDF.
No account required
Try it free with up to 10 pages per file. No sign-up needed to test the tool.
Batch processing
Pro users get unlimited pages. Process contracts, medical records, and legal documents at scale.
One-click download
Review detected PII, then download the redacted PDF with a single click. Filename appended with _REDACTED.