SignPDF
SignPDF
Permanently redact personally identifiable information from PDF documents before sharing, publishing, or archiving. Browser-based, free, GDPR-compatible.
Remove PII — FreeAI-powered PII detection · Files never leave your browser · Free plan available
Personally Identifiable Information (PII) is any data that can be used to identify a specific individual. Under GDPR (EU), CCPA (California), PIPEDA (Canada), and dozens of other privacy regulations, organizations have legal obligations around how they handle, share, and store PII.
When you share a PDF that contains PII without authorization — a client report, a legal filing, an HR document, a research dataset — you may be violating privacy law, exposing your organization to regulatory penalties, and putting individuals at risk.
Redaction permanently removes PII from the document so it can be shared safely. It's different from anonymization (replacing with fake data) but is the standard approach for document sharing and publication.
Additional PII — names, dates of birth, passport numbers, national IDs — can be manually redacted using the brush tool when they don't match a fixed pattern.
Go to SignPDF and open the document. All processing happens in your browser — no file is transmitted, which means you're not creating a new data processing event just by opening the document.
Click Redact in the toolbar. The AI Redaction panel scans the PDF's text layer for known PII patterns across all pages simultaneously.
Check off the PII types to detect: Email, Phone, SSN, Credit Card, Address, Account Number. You can run all simultaneously or select specific categories.
SignPDF highlights every match. Review individually if needed, then click Redact All. Each instance is permanently removed — not just visually covered.
Use the redaction brush for names, dates of birth, or any identifiers the AI didn't catch. Scroll through all pages to confirm thoroughness.
Download the redacted PDF. The PII has been removed from the text layer. Safe to share, archive, or publish.
EU General Data Protection Regulation. Requires data minimization — only share the personal data necessary for the stated purpose. Sharing documents with excess PII may violate Article 5.
California Consumer Privacy Act. Consumers have rights to restrict sharing of their personal information. Organizations must redact PII before sharing with third parties where consent wasn't obtained.
Health Insurance Portability and Accountability Act. Requires de-identification of Protected Health Information (18 categories) before sharing for research or secondary use. Full HIPAA guide →
Court filings and educational records often require redaction of student data or non-party personal information. Federal Rule of Civil Procedure 5.2 mandates redacting SSNs, DOBs, and account numbers in court filings.
These three approaches are often confused:
For sharing PDFs with third parties, redaction is the clearest, safest approach. There's no de-anonymization risk because the data is simply gone.
Every cloud-based PDF tool that you upload documents to becomes a data processor under GDPR. You need a Data Processing Agreement (DPA) with that vendor. You need to know where their servers are located. You need to verify their security certifications.
With SignPDF, your PDF is processed entirely in your browser tab. No PII ever travels over the network. No DPA needed. No cross-border data transfer concerns. The architecture itself is privacy-by-design.
AI-powered detection. Permanent redaction. GDPR-compatible architecture. Free.
Open SignPDF Free →No upload · No DPA needed · Free plan available