Beta — free

Blackline Desktop

Redact documents straight on your Mac, PC or Linux machine. Your files never leave your computer.

Stay in the browser

macOS · Windows · Linux · ~4 KB · requires Node.js

Blackline AI

Open local PDFs and images via drag & drop or file dialog
Redaction happens fully on your machine
Only recognised text is sent encrypted to the detection cloud
Works offline for manual redaction
Available for macOS, Windows and Linux

Install in 4 steps

Install Node.js

Grab the LTS build from nodejs.org if it is not installed yet.

Unzip the archive

Extract blackline-desktop.zip into a folder of your choice.

Open a terminal

Inside the folder run: npm install (one-time).

Launch

npm start — the Blackline window opens.

Commands

cd blackline-desktop
npm install
npm start

The desktop app uses the same cloud detection service as the web version (encrypted, no storage). The actual redaction of your files happens exclusively locally on your machine.