Protect PDF

All encryption happens in your browser — your PDF and passwords never leave your device.

Free Online PDF Protector — Add Password & Encryption Instantly

Secure your PDFs with strong password protection and permission controls — directly in your browser, fully private.

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Instant Security

Protect files in seconds — no software installation needed.

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Maximum Privacy

No upload. Your passwords & file stay on your device.

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Free Forever

Unlimited use. No quotas. No registration required.

Why Protect PDFs with Passwords?

PDFs often contain sensitive information — contracts, financial reports, medical records, legal documents, personal data. Adding password protection helps you:

Prevent unauthorized people from opening your files
Restrict printing, copying text, or editing content
Share documents securely via email or cloud storage
Control who can view or modify confidential information

How Our PDF Protector Tool Works

Upload the PDF you want to protect
Set passwords — user password (to open) and/or owner password (to control permissions)
Choose permissions — printing, copying, modifying, annotating
Protect & Download — get encrypted PDF instantly

Common Use Cases

✓ Protect client contracts or proposals before sending

✓ Secure financial statements or tax documents

✓ Restrict editing on shared resumes or certificates

✓ Prevent copying from confidential reports or manuals

Why Choose This PDF Protector Tool?

Real Privacy & Security

Unlike online password tools — your passwords & file are never transmitted.

Completely Free Forever

No limits, no premium upsells, no forced registration.

Works Offline (after load)

Protect PDFs even without internet after initial page load.

Frequently Asked Questions

Is this PDF protector 100% private and secure? ▼

Yes — completely. All encryption happens locally in your browser. Your PDF and passwords never leave your device.

What is the difference between user and owner password? ▼

User password: required to open the file.
Owner password: required to change permissions or remove protection (can be stronger).

Can I protect a PDF without a user password? ▼

Yes — leave user password blank. The file opens freely but permissions (printing, copying, editing) remain restricted if owner password is set.

Is the encryption strong? ▼

Yes — uses AES-256 encryption when possible (PDF standard). Very secure against brute-force attacks if strong passwords are used.

Can I use this tool on mobile? ▼

Yes — fully responsive. You can upload PDFs and set passwords from phones/tablets.

Does it work offline? ▼

Yes — after the page loads once, libraries are cached and you can protect PDFs offline.

القائمة الرئيسية

PDF Protect

Protect PDF with Password Online — Free & Secure

PDF Protector Tool

Set Password & Permissions

Permissions (if owner password is set)