Protect PDF
Secure your PDF document with strong password protection and restricted permissions.
or drop PDF here
About PDF Protect β Password Protect PDF Files Online
Secure sensitive financial reports, legal contracts, and personal records with military-grade encryption. Our PDF Protect tool allows you to add a strong user password, restricting document access, printing, text copying, and modification.
How to use this tool
- 1
Select PDF File
Upload the document you wish to password protect.
- 2
Enter Secure Password
Type your custom password and confirm entries.
- 3
Set Access Permissions
Optionally restrict printing, copying text, or editing.
- 4
Download Encrypted PDF
Save your password-protected PDF document.
Technical Specifications
| Parameter | Specification Details |
|---|---|
| Input Document | PDF (.pdf) |
| Encryption Standard | 256-bit AES / 128-bit RC4 |
| Permission Flags | Print, Copy, Edit, Annotate |
| Password Retention | Never logged or stored |
Key Features & Capabilities
- β
256-Bit AES Encryption
Industry-standard encryption compliant with global security standards.
- β
Custom Permission Controls
Restrict printing, text copying, and page extraction.
- β
Client-Side Security
Password encryption runs locally without revealing passwords to servers.
- β
Universal Reader Support
Encrypted PDFs open cleanly in Adobe Acrobat, browser viewers, and mobile devices.
Common Use Cases
Password protecting tax forms and payroll documents before sending by email.
Securing confidential corporate proposals during client negotiations.
Preventing unauthorized text copying from proprietary academic papers.
Pro Tips & Best Practices
Use a combination of uppercase letters, numbers, and special symbols for a strong password.
Store your password securely; encrypted PDFs cannot be opened without the correct password.
Use our PDF Merge tool to combine files before applying encryption.
Frequently Asked Questions
β οΈ Legal & Safety Notice
You are solely responsible for remembering the set password. Lost passwords cannot be recovered.
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