PDF Password Protect

How to Password Protect PDFs

1. Upload the PDF file you would like to secure.
2. Provide your strong custom user and owner passwords.
3. Download the newly encrypted document containing certified access controls.

Key Features

• Industrial-grade standard encryption: Implements reliable RC4 and AES locks.
• Access limits permissions: Selectively restricts copy, edit, print, or extract activities.
• Strict local lock: Password security flags are generated purely inside the browser sandbox.

Common Use Cases

• Secure contracts, balance sheets, and tax reports before emailing.
• Lock sensitive corporate files, research models, and resumes.
• Configure student exams, schedules, and scores before release.

Frequently Asked Questions

Are my document security passwords safe here?

Yes, 100%. All cryptographic key transformations and byte streams are processed locally in your active browser. Since we operate offline under SSL, your passwords, decrypted PDF arrays, and locked file keys are never sent, stored, or logs-recorded on any remote database.

Will standard PDF readers support the generated encrypted file?

Yes! The resulting PDF uses standard cryptographic compliance encryption and standard trailing permissions dictionaries. When a recipient attempts to open or write into the secured file via Google Chrome, Adobe Acrobat Reader, macOS Preview, or mobile viewers, it will prompt securely for the password.