How to Redact PDF Online
Step-by-step instructions to permanently black out sensitive text with ZiaSign.
Why this workflow matters
ZiaSign's Pro PDF redaction tool permanently removes sensitive text from documents. Unlike simple blackout annotations, true redaction deletes the underlying data — text cannot be recovered. Search by keyword or regex pattern to find and redact across all pages.
Step by step
Redact PDF is one of the fastest ways to permanently black out sensitive text. Pro access gives you the full workflow.
- 1
Upload your PDF
- 2
Enter text patterns to redact
- 3
Click 'Redact'
- 4
Download redacted PDF
Frequently asked questions
Is redaction permanent?
Yes. Redacted text is permanently removed from the PDF — not just visually hidden. The underlying data is deleted.
Can I redact by pattern?
Yes. Enter regex patterns like email addresses, phone numbers, or custom strings. All matches are redacted across the document.
Can I redact images from a PDF?
Yes. You can select and redact image areas within the document, permanently removing the visual content.
Is redaction GDPR compliant?
Yes. ZiaSign's redaction permanently removes the underlying data, meeting GDPR, HIPAA, and CCPA requirements for PII removal.
More specific workflows for this tool
Related guides
How to Flatten PDF Online
Step-by-step instructions to flatten forms and annotations into static content with ZiaSign.
Read guideHow to Protect PDF Online
Step-by-step instructions to password-protect and encrypt your pdf with ZiaSign.
Read guideHow to Unlock PDF Online
Step-by-step instructions to remove password protection from a pdf with ZiaSign.
Read guideReady to run the actual workflow?
You have the steps. Open the tool, process the file, and then move into the next recommendation if the document still needs cleanup, protection, or conversion.