Redact PDF Online — Permanently Hide Sensitive Text Free
Draw redaction boxes over personal data, financials, or confidential text to permanently delete it. True redaction removes content entirely — it cannot be uncovered by removing a visible black box.
How to redact pdf online — 3 easy steps
- Step 1: Upload the PDF with content to redact.
- Step 2: Draw boxes over text or areas to permanently remove.
- Step 3: Click Apply Redaction and download the clean PDF.
Why use FileMasterPDF to edit and annotate PDF files
- Non-destructive: the original PDF is never modified, only a new output is created.
- 100% private: editing runs in your browser — nothing is uploaded.
- No specialist software: works in any modern desktop or mobile browser.
- Instant results: changes are applied and downloadable in seconds.
- Free forever: no account, no daily limits, no watermarks.
Frequently asked questions — Redact PDF
Is redaction permanent?
Yes — content is deleted from the PDF structure, not just hidden.
Can it be recovered by removing the black box?
No — the underlying data is permanently gone.
Can I redact images?
Yes — draw a box over any image or part of an image.
Is it safe for confidential documents?
Yes — runs in your browser with zero server upload.