🛡️ Protect PDF with Password
Encrypt your PDF with standard 128-bit security. Set document open passwords, restrict printing or copying, and safeguard confidential data 100% locally in your browser.
Drag & drop your file here, or browse
Supports PDF files. Processing occurs 100% locally.
How to Password Protect & Encrypt PDF Files Online
Safeguard your confidential contracts, tax returns, and private documents with industry-standard 128-bit encryption.
1. Upload Your PDF File
Drag and drop the PDF you wish to encrypt. The document remains strictly inside your computer's RAM.
2. Set Strong Password
Enter the user password required to open the PDF. Check the real-time password strength meter.
3. Configure DRM Permissions
Toggle restrictions on high-resolution printing, clipboard text copying, or page editing.
4. Download Protected Document
Click Encrypt to download your 128-bit password-protected PDF file instantly.
Zero Cloud Interception • 100% Client-Side Encryption
Never transmit your confidential passwords or unprotected documents to external servers. All encryption keys are calculated locally in your browser memory.
Frequently Asked Questions
How to Password Protect and Encrypt PDF Files: Complete Security & Permissions Guide
Learn how to secure PDF files with 128-bit AES/RC4 encryption, set user and owner passwords, and prevent unauthorized printing, copying, and edits locally.