# Secure PDF free — encrypt, redact PII, Confidential Send

> Encrypt PDF, unlock, strip metadata, auto-redact PII, and run Confidential Send locally. Free private PDF security — passwords never leave your device.

Canonical: https://mypdf.space/security
Last updated: 2026-10-26

## Overview

Protect sensitive documents with local encryption, PII tools, and Confidential Send — no server ever sees your passwords or file contents.

Scan for PII, auto-redact common patterns, strip metadata, password-encrypt, or run Confidential Send for a one-pass private prep (single file or batch zip). Always review redacted pages before you email or share.

## Tools in this category

- [Auto-redact PII](https://mypdf.space/tools/auto-redact-pii) — Detect SSNs, emails, phones, and cards — then permanently black them out on matched pages.
- [Privacy scanner](https://mypdf.space/tools/privacy-scanner) — Scan a PDF for PII patterns and report what was found, without removing it.
- [Fingerprint](https://mypdf.space/tools/fingerprint) — Generate a SHA-256 fingerprint of the file bytes and extracted text.
- [Remove metadata](https://mypdf.space/tools/remove-metadata) — Clear PDF properties (title, author, subject, keywords, dates) and XMP metadata. Page content is not changed.
- [Encrypt PDF](https://mypdf.space/tools/encrypt-pdf) — Password-protect a PDF so it cannot be opened without the password.
- [Unlock PDF](https://mypdf.space/tools/unlock-pdf) — Remove password protection from a PDF you own. Password stays on your device.
- [Confidential Send](https://mypdf.space/tools/workflow) — Private prep in one pass — scan/redact PII, strip metadata, watermark, encrypt — or Email Ready. Batch many PDFs into a zip.
- [Deep Clean](https://mypdf.space/tools/deep-clean) — Forensic-lite scrub — strip metadata, drop embedded files, clear OpenAction/JS markers, flatten forms. Safe-to-email prep, not NSA-grade wipe.
- [Hidden Content Auditor](https://mypdf.space/tools/pdf-audit) — Flag off-page text, tiny or near-white text, attachments, form residue, and JavaScript/OpenAction markers before you share.
- [Job Application Packet](https://mypdf.space/tools/job-packet) — Compress resume to a size target, deep-clean, optional company watermark, zip with cover letter and a privacy receipt — all local.
- [Sanitize for AI](https://mypdf.space/tools/sanitize-for-ai) — Export visible text only (drop images/layout) as .txt or a minimal PDF sized for ChatGPT/Claude paste — drafting help, not archival.

## FAQ

### Do these tools upload my PDF?

No. Every tool in this category runs in your browser. File bytes are not sent to a PDF upload API.

### Are the tools free?

Yes — free, no account, and no watermark on exports.

### What can I do in Security?

Protect sensitive documents with local encryption, PII tools, and Confidential Send — no server ever sees your passwords or file contents.

## Related

- [Home](https://mypdf.space)
- [Guides](https://mypdf.space/guides)