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PDF SECURITY & PRIVACY

Protect PDF
with password.

Add strong password protection and military-grade AES-256 encryption to your sensitive PDF files directly in your web browser. Confidential contracts, statements, and tax forms never leave your device.

SECURITY & ENCRYPTION

Protect PDF

100% Private
  1. 1Select PDF
  2. 2Set password
  3. 3Download PDF

Select a PDF to Protect

Drag and drop your PDF here, or click to browse files up to 20 MB.

🔒 Files are encrypted client-side. Your password and files never leave your browser.
Encrypted locally on your device. Zero document uploads.
  • Bank-Grade AES-256Standard 256-bit AES encryption compliant with modern PDF readers and mobile viewers.
  • Password Strength IndicatorReal-time visual feedback guides you to create strong, secure passwords.
  • Zero Server UploadsProtection runs 100% on your device using browser Web Crypto APIs.
  • Universal Reader SupportProtected files prompt for a password in Adobe Acrobat, Chrome, Apple Preview, and mobile apps.

Important Privacy Notice
Make sure you record your password. We Make PDF does not track or store passwords, and lost passwords cannot be recovered.

HOW IT WORKS

Password Protect Your PDF in Three Easy Steps

Instant client-side encryption ensures absolute privacy for every confidential document.

01

Choose a PDF Document

Select any standard PDF document up to 20 MB from your device or drop it into the upload box.

02

Set Your Secure Password

Type your password with real-time strength feedback. Choose modern AES-256 or legacy RC4 encryption.

03

Download Encrypted PDF

Your document is encrypted locally in your browser memory. Save your password-locked PDF instantly.

CRYPTOGRAPHIC SECURITY

Why In-Browser PDF Encryption Is the Safest Choice

Sending sensitive tax documents, salary slips, or legal agreements to cloud servers creates massive privacy vulnerabilities. We Make PDF encrypts your PDF directly on your processor.

Standard AES-256 Encryption

We use the standardized Advanced Encryption Standard with 256-bit key length. This algorithm scrambles the internal PDF streams into ciphertext that cannot be cracked without your exact secret passphrase.

  • Military-grade cryptographic cipher
  • Protects text, embedded attachments, and images
  • Fully compatible with all ISO 32000 PDF readers

True Zero-Knowledge Security

Because the encryption key is derived directly on your computer, no human, system administrator, or external hacker can intercept your password or examine your files.

  • Zero server transmission or database logging
  • Memory wiped as soon as your browser tab closes
  • Safe for corporate intellectual property and HIPAA compliance

Universal Reader Compatibility

Your protected document requires no specialized third-party viewers. It prompts for a password in Adobe Acrobat, Apple Preview, Google Chrome, Mozilla Firefox, and mobile PDF apps.

  • Native password prompt on Windows, Mac, iOS, Android
  • No extra software installation needed for recipients
  • Locks print, copy, and edit permissions securely
PROTECTION SCENARIOS

When Should You Password Protect a PDF?

Keep sensitive records safe from prying eyes and unauthorized distribution.

Financial & Tax Filings

Lock bank statements, W-2/1099 tax forms, and salary payslips before sending them via email or uploading to cloud storage.

Legal NDAs & Commercial Contracts

Protect non-disclosure agreements, merger briefs, and client proposals with a unique password shared only with key stakeholders.

Medical Records & Patient Data

Comply with strict healthcare privacy standards by encrypting lab test results and medical histories before digital sharing.

Personal Identification Documents

Safeguard copies of your passport, driver license, or social security card when applying for loans or renting apartments.

EXPLORE RELATED PDF TOOLS
Unlock Protected PDFWatermark PDF PagesFlatten PDF FormsCompress Protected PDF
QUESTIONS & ANSWERS

Frequently Asked Questions About PDF Password Protection

Learn how to select strong passwords and secure your files with modern AES encryption.

What is the difference between AES-256 and RC4 encryption?

AES-256 is the modern cryptographic standard approved by banks and governments for top-secret documents. It provides virtually unbreakable security. RC4 128-bit is an older legacy standard supported by very old PDF viewers (Acrobat 5.0 and earlier). We recommend AES-256 for all modern devices.

Does We Make PDF store or know my password?

Never. We Make PDF operates 100% inside your web browser. Neither your document nor your entered password is ever transmitted to or logged on any server. Because we do not store passwords, lost passwords cannot be retrieved.

Will a password-protected PDF open on smartphones and tablets?

Yes. PDFs encrypted with standard AES-256 will prompt for a password when opened in Apple Books, Adobe Acrobat Reader on iOS/Android, Google Drive, or any modern web browser.

How can I remove the password later?

You can unlock and decrypt your protected PDF document anytime using our companion "Unlock PDF" tool by entering your password.

NEED TO REMOVE A PASSWORD?

Unlock a password-protected PDF document

Easily remove password restrictions when you have the authorized credentials.

Open Unlock PDF