Redact PDF — Black Out Sensitive Info Free
Redact PDF blacks out sensitive text or regions so private information cannot be recovered. Essential for sharing documents while protecting names, addresses or financial data. Runs entirely in your browser on PDFStudio Pro.
Step-by-step instructions
- Open Redact PDF.
- Upload the PDF.
- Mark areas to redact.
- Download the redacted PDF.
Supported formats
PDF (.pdf).
Privacy & security
Files are processed locally in your browser. We do not operate an upload endpoint for this tool. Temporary data is released when you leave the page. The site is served over HTTPS. See our Privacy Policy.
Pricing & workflow
Price: Free forever — no limits, no watermark. Workflow: open tool → add file(s) → process in browser → download. Works offline for most operations once libraries are loaded. Compatible with Chrome, Edge, Firefox and Safari on desktop and mobile.
Frequently asked questions
Is Redact PDF free?
Yes. Unlimited use, no registration, no watermark.
Are my files uploaded?
No. Processing is 100% in-browser.
Can I use it on mobile?
Yes, on modern mobile browsers.
Is there a file size limit?
We do not set a server limit. Practical limits depend on your device memory.
Does it add a watermark?
No. Output contains only your content.