Add military-grade AES-256 encryption to your PDFs. Set passwords and permissions without uploading files to any server.
Protect your confidential PDF documents with military-grade AES-256 encryption directly in your browser. This free tool lets you set an opening password that must be entered before anyone can view the file, and optionally restrict printing, copying, and editing through granular permission controls. No server uploads, no accounts, no subscriptions — just instant, private encryption that keeps your sensitive documents safe. Whether you're sharing contracts with clients, distributing financial reports, or archiving personal records in the cloud, password protection adds a critical layer of security. The entire encryption process runs locally on your device using the Web Crypto API, meaning your PDF and password never touch our servers. You get the same level of protection that enterprise software charges hundreds of dollars per year for — completely free.
Select or drag and drop the PDF file you want to protect with a password.
Choose a strong password and configure what actions are allowed — printing, copying, modifying, annotating, and filling forms.
Get your password-protected PDF instantly. Everything runs in your browser — no server uploads.
Protect contracts, NDAs, and case files with password encryption before sharing with clients or opposing counsel. Restrict editing to prevent unauthorized modifications.
Encrypt financial statements, tax documents, and audit reports to prevent unauthorized access when distributing to board members or stakeholders.
Secure employee contracts, salary information, and performance reviews when distributing digitally. Restrict copying to prevent data leaks.
Protect patient records and medical documents to maintain HIPAA compliance when sharing electronically between providers, insurers, and patients.
Encrypt mortgage documents, property deeds, and closing paperwork before sending to buyers, sellers, and title companies.
Combine uppercase, lowercase, numbers, and symbols. Avoid dictionary words and personal info. A 12+ character password is virtually uncrackable with AES-256 encryption.
Set a different owner password to retain full control over the document. Share the user password with recipients while keeping the ability to change permissions or remove the password later using the owner credentials.
After encrypting, open the PDF to verify the password works and permissions are set correctly before sending it to others. Try printing and copying to confirm restrictions.
Use a password manager like Bitwarden or 1Password to store your PDF passwords. Since we never store your password, there is no recovery option if you forget it.
All processing happens locally in your browser. Your files never leave your device.
No uploads, no waiting for servers. Instant processing powered by your device.
No limits, no watermarks, no registration required. Free forever.
Encrypt PDF files online with AES-256 encryption. No file uploads to servers. Set passwords and restrict permissions in your browser.
Lock your PDF files with a password so only authorized people can open them. Free, private, and runs entirely in your browser.
Professional PDF encryption tool with AES-256 security. Set user and owner passwords, configure permissions. Browser-based and free.
Secure your PDF documents for free with AES-256 encryption. No signup, no limits, no watermarks. Everything runs in your browser.
Add a password to any PDF file in seconds. Free browser-based tool with AES-256 encryption. No server uploads.
Professional online PDF password protection with AES-256 encryption. Set user and owner passwords, configure permissions. 100% private.
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