Free PDF Password Protector
Secure your PDF documents with strong encryption. Add passwords, set permissions, and protect your sensitive information directly in your browser.
Drop PDF file here or click to browse
Your file will be encrypted locally in your browser
Strong AES Encryption
Custom User Passwords
Restrict Printing & Copying
Prevent Modifications
Client-Side Encryption
No Server Uploads
Instant Processing
100% Free & Secure
Confidential Contracts
Secure legal documents
Security & Compliance
AES-256 Encryption Standard
We use the industry standard for secure document transfer. Your passwords never leave your browser. Perfect for:
HR & Legal Compliance
Ensure GDPR & HIPAA compliance by encrypting employee contracts and patient data before sharing. Accidentally locked the wrong file? Use our PDF Unlocker if you have the password but want to remove it permanently.
Client Confidentiality
Freelancers and consultants: Protect your intellectual property. Send locked drafts to clients and prevent unauthorized copying or printing.
User Reviews
Join thousands of satisfied users who trust our tools for their daily tasks
Alex Johnson
VerifiedAmazing collection of tools
30tools has become my go-to for all online utilities. Every tool I've used works perfectly and the fact that it's all free is incredible. No ads, no watermarks!
Maria Garcia
VerifiedReliable and fast
Been using these tools for months now. They're consistently reliable and much faster than similar tools I've tried. The privacy-first approach is a huge plus.
James Wilson
VerifiedProfessional quality tools
As a freelancer, I need tools that work reliably without breaking the bank. 30tools delivers professional-grade utilities completely free. Highly recommended!
How to Password Protect a PDF
Upload PDF
Select the PDF file you want to secure.
Set Password
Enter a strong password and choose permissions.
Protect
Click "Protect PDF" and download your encrypted file.
Everything you need to know about pdf security
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Perfect tool for my blog! The interface is super clean and intuitive. Love that it works directly in the browser without uploading files to servers.
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