Protect PDF with Password
Encrypt your documents with secure AES encryption online.
How to Password Protect PDF Online
Select Your PDF
Choose your file or drag and drop it into the protector box above from your computer or mobile phone.
Automatic Encryption
Our automated engine secures embedded assets instantly without requiring software installation.
Get Secured PDF
Download your protected PDF file instantly to your device, ready to be safely stored or shared.
Key Features & Benefits of LikePDF Security
When sending sensitive corporate records or financial data, unauthorized access is a constant risk. LikePDF provides an intelligent encryption engine engineered to secure documents against unwanted viewing.
- 100% Privacy & Auto-Deletion: Security is our primary commitment. Uploaded files are transmitted over TLS-encrypted protocols and automatically purged from our servers within 60 minutes.
- Lightning Fast Browser Speed: Say goodbye to installing heavy software. Our engine processes files in seconds across any browser or mobile OS.
- No Watermarks or Forced Signup: Unlike other platforms, we don't stamp brand watermarks onto your documents or require credit card details or email accounts to use our tools.
- Ideal for Confidential Records: Effortlessly lock sensitive files to meet strict privacy requirements.
Frequently Asked Questions (FAQ)
Will encrypting a PDF decrease text quality?
No. Our encryption algorithm secures file structure without modifying text or vector visual fidelity.
Is it safe to protect confidential bank statements or government forms?
Yes. All uploaded files are processed over secure HTTPS connections and automatically purged permanently from our servers after 60 minutes.
What is the maximum file size limit for PDF protection?
LikePDF allows you to protect PDFs up to 35MB for free without requiring any account registration.
Can I protect a PDF on Android, iPhone, or Mac?
Yes! LikePDF runs directly in your web browser across all modern operating systems.