Secure your PDF files by encrypting them with a strong password. Protect sensitive information quickly and easily with military-grade AES-256 encryption.
Follow these simple steps to encrypt your PDF files with a password using our free online tool:
Click on the file upload area or drag and drop up to 10 PDF files directly. The tool accepts files up to 50MB each. Selected files appear in the list with their sizes.
Type a secure password in the password field. Use at least 8 characters with a mix of uppercase, lowercase, numbers, and symbols. The strength indicator helps you choose a robust password.
Check the file list to confirm your uploads. You can see individual file sizes and remove any files if needed before processing.
Once files are uploaded and a password is set, click the "Add Password Protection" button to start encrypting your files.
Our servers will encrypt your PDF files with AES-256 bit security. The progress bar shows real-time status. Larger files may take a few moments longer.
When complete, download your password-protected PDF files. Files are automatically deleted from our servers after download for your privacy.
Pro Tip: Use a password manager to store your PDF passwords. If you lose the password, the file cannot be recovered due to the strength of AES-256 encryption.
Our PDF password protection tool helps you secure sensitive documents with military-grade AES-256 encryption. Whether you need to add password to PDF for work, protect financial reports, or encrypt personal documents, this tool delivers maximum security in seconds.
Our tool uses multiple security techniques to protect your PDF files:
| AES-256 Encryption: Military-grade standard | User Password: Required to open the document |
| Owner Password: Controls permissions (printing, editing) | Metadata Encryption: Protects document info |
| Secure Hashing: Password verification without exposure | No Backdoors: Impossible to recover lost passwords |
Protect confidential legal agreements, contracts, and court documents from unauthorized access.
Secure sensitive financial reports, bank statements, and tax documents before sharing via email.
Encrypt scans of passports, driver's licenses, and social security cards to prevent identity theft.
Protect confidential business plans, pitch decks, and proprietary information shared with partners.
Secure transcripts, diplomas, and recommendation letters before sending to institutions.
Encrypt patient health information and medical reports to comply with privacy regulations.