Maska

A privacy-focused PDF redaction tool that runs entirely in your browser. Upload a PDF, draw black masks over sensitive information, and download the redacted version — no data ever leaves your device.

Features

• 100% client-side — all processing happens locally in the browser, nothing is uploaded to a server
• Draw to redact — drag to draw black rectangles over any content you want to hide
• Multi-page support — navigate between pages and redact across the entire document
• Zoom controls — zoom in/out for precise masking
• Undo & clear — undo last mask, clear current page, or clear the entire document
• Instant download — download the redacted PDF with one click

Tech stack

• React + TypeScript
• Vite (build tool)
• pdf.js (rendering) + pdf-lib (editing)
• Tailwind CSS + shadcn/ui

Getting started

Requires Node.js (v18+).

git clone https://github.com/jsprpalm/maska-my-pdf.git
cd maska-my-pdf
npm install
npm run dev

The dev server starts at http://localhost:8080.

License

MIT