Live demo · runs in your browser

See it redact — nothing uploaded.

Edit the sample contract on the left. Names, organizations, emails, phones, amounts, dates, SSNs and matter IDs are detected and redacted on the right — entirely in your browser. Open your devtools Network tab: you'll see zero requests. That's the whole point.

Style
Original · your text
Redacted · black bars

100% local. Detection and redaction run as JavaScript on this page — your text never leaves the browser. The real Blackbar app works the same way on your machine, but with a far more thorough engine: checksum-validated IDs, contract-structure parsing, spaCy NER, OCR for scans, and an extraction-safety gate that re-reads every export and refuses if anything survives. It handles pdf · docx · pptx · xlsx · html · md · images.

This in-browser demo uses lightweight regular expressions for illustration only — it will miss things and over-match others, and it is not a substitute for the real tool. Do not rely on it to redact a real document; install Blackbar and review every proposal.

Get the real thing on Codeberg → How to install