Protect PDF – Add Password to Your PDF
Encrypt your PDF files with a password for enhanced security. Our server-side tool provides strong encryption to protect your sensitive documents — no signup or watermark required. All files are processed securely and automatically deleted after 30 minutes. No Signup, No Watermarks — Simply upload your PDF, set your password, and download your protected file in seconds.
Why Choose Our Server-Side PDF Protection Tool
We use enterprise-grade server technology with strong encryption standards to ensure your PDF security without compromising document quality.
- Military-Grade Encryption: Apply 128-bit or 256-bit AES encryption to prevent unauthorized access to your sensitive documents
- Privacy-First Security: Your files are encrypted during upload and permanently deleted after 30 minutes. Nothing is stored long-term
- Flexible Protection: Set open passwords (to view) and permission passwords (to edit, print, or copy content)
- Quality Preservation: Encryption doesn't alter your PDF content, quality, or formatting in any way
- Batch Processing: Protect multiple PDF files simultaneously with the same or different passwords
- 100% Free: No fees, ads, or registration required
How to Protect PDF in 3 Simple Steps
- Upload Your PDF: Drag and drop your PDF file or click to select it from your device
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Set Security Options:
- Choose encryption strength (128-bit for standard protection, 256-bit for maximum security)
- Set open password (required to view the document)
- Optional: Set permission password to restrict printing, editing, or copying
- Select restrictions: Allow/disallow printing, text copying, or document modifications
- Protect & Download: Click Protect Now. Your encrypted PDF will be processed securely on our servers and automatically downloaded to your device
When to Protect PDF Files
- Confidential Documents: Secure financial reports, legal contracts, or business plans before sharing
- Client Materials: Protect proprietary information, proposals, or intellectual property sent to clients
- Personal Documents: Encrypt sensitive personal documents like tax returns, medical records, or identification
- Academic Work: Secure research papers, theses, or unpublished work during peer review
- Business Communications: Protect internal memos, HR documents, or strategic plans
- Shared Resources: Secure documents shared via cloud storage, email, or public networks
Frequently Asked Questions
We use industry-standard AES encryption (128-bit or 256-bit), the same technology used by banks and governments. 256-bit encryption is virtually unbreakable with current technology.
Yes, anyone with the open password can view your PDF. They'll need to enter the password once to open the document, then can view it normally on any PDF reader.
You can prevent users from:
- Printing the document
- Copying text or images
- Editing or modifying content
- Adding comments or form fields
- Extracting pages
Absolutely. All uploads use secure HTTPS encryption and are processed on our private servers. Files are automatically deleted after 30 minutes — nothing is stored or viewed.
Yes, if you have the permission password, you can use our Unlock PDF tool to remove protection. Always keep a copy of your passwords in a secure location.
We cannot recover forgotten passwords due to the strong encryption used. We recommend storing passwords securely, as password-protected PDFs cannot be unlocked without the correct password.
Most modern PDF readers (Adobe Acrobat, Preview, Chrome, Firefox) support password-protected PDFs. Some older or basic readers may have limited functionality with restricted permissions.
Yes. Upload multiple PDFs and set unique passwords for each document. Our batch processing handles individual security settings for every file.
About This Tool
Our platform prioritizes security and privacy. By processing files on secure servers with professional PDF encryption technology, we ensure robust document protection without compromising quality or accessibility. With intuitive security controls, flexible permission settings, and batch processing capabilities, JPGtoPDFNow delivers a professional PDF protection experience for everyone.