Protect PDF
Add password protection to your PDF documents. Set permissions for printing, editing, and copying. 100% free — runs entirely in your browser.
Drop a PDF file here
or click to browse
Protect your PDF with passwords for free using PDF Shawon. Upload your document, set an open password and optional permissions for printing, copying, and editing. The tool applies AES encryption directly in your browser — your password and files never leave your device.
Secure Your PDF with Password and Encryption
Add strong encryption to your sensitive PDF documents. Set both open passwords (to prevent unauthorized viewing) and owner passwords (to control printing, copying, and editing permissions). Industry-standard AES encryption keeps your documents genuinely secure.
How to Use PDF Protector
Select the PDF document you want to protect with a password
Enter your password and toggle printing, copying, and editing permissions
Click Protect and save your securely encrypted document
Why Use PDF Shawon's PDF Protector?
Your files never leave your device. All processing happens locally in your browser.
No upload wait times. Process files instantly using your device's power.
No hidden fees, no registration required. Unlimited usage for everyone.
Use on desktop, tablet, or mobile. No app download needed.
Frequently Asked Questions
How do I add a password to a PDF?
Upload your PDF, enter your desired password (minimum 4 characters), set permissions for printing/copying/editing, and click Protect. Download the encrypted PDF instantly.
What type of encryption is used?
PDF Shawon uses AES encryption, the industry standard for PDF security. This ensures your password-protected files are genuinely secure.
Can I set different permissions?
Yes! You can independently allow or restrict printing, copying text, editing content, and adding annotations. Each permission can be toggled separately.
Is PDF password protection free?
Yes, 100% free with no limits. Protect as many PDFs as you need without registration or payment.
Is my PDF uploaded to a server?
No. Encryption happens entirely in your browser. Your files and passwords never leave your device.
Can I protect PDFs on mobile?
Yes! PDF Shawon works on any device with a modern browser — smartphones, tablets, laptops, and desktops.
Supported File Formats
This tool supports all major document formats for seamless conversion and processing.
All file processing happens directly in your browser using JavaScript and WebAssembly. Your files are never uploaded to any server — they remain on your device at all times.
Who Uses This PDF Protector?
About PDF Shawon — Free Browser-Based PDF Tools
PDF Shawon provides 27+ professional-grade PDF tools that run 100% in your browser. Merge, split, compress, convert, edit, sign, and protect PDFs — all without uploading files to any server. Your documents stay completely private and secure.
Our tools use PDF.js, pdf-lib, and WebAssembly to process PDFs directly on your device. Whether you need to merge multiple PDFs, convert documents to Word or Excel, compress files for email, or digitally sign contracts — PDF Shawon handles it all for free. Compatible with Chrome, Firefox, Safari, Edge, and all modern browsers on desktop and mobile.