Free Protect PDF Online – Fast & Private
Add password protection to your PDFs instantly in browser. Set viewing & editing restrictions – no signup, no watermarks. Keep sensitive files secure.
Protect PDF – Free & Private
Add password protection to your PDF directly in the browser.
No upload to server, 100% private, encrypted locally.
Set user password (to open) and/or owner password (to restrict actions)
Drag & drop PDF file here
or
Permissions (when owner password is set):
Drag & drop PDF • User & owner passwords • Control permissions • No server upload • 100% private
How to Protect PDF in 4 Simple Steps
- Upload – select or drag your PDF
- Set passwords – add user (open) and/or owner (permissions) password
- Choose restrictions – allow/block printing, copying, editing etc.
- Protect – click and download secured PDF
Why Use This PDF Protector?
- Fully browser-based – no software installation
- Private protection – document never leaves your device
- Supports user password (viewing) & owner password (permissions)
- Granular controls: printing, copying, editing, form filling
- Free with no limits or watermarks
- Preserves original content quality
- Offline use after PWA install
PDF Protector Comparison
| Feature | Waridi Tech | Other Online Tools |
|---|---|---|
| Privacy | Local browser only | Often uploads to server |
| Cost | Completely free | Free with limits / paid |
| Watermarks | None | Common on free plans |
| Permission Settings | Full control | Often basic or none |
| No Install | Yes | Sometimes requires app |
Frequently Asked Questions
Is this PDF protector free?
Yes – completely free, no registration or hidden costs.
Are my PDFs uploaded anywhere?
No – all protection happens locally in your browser. Files never leave your device.
What’s the difference between user and owner password?
User password: required to open/view. Owner password: controls permissions (printing, copying, editing) even if file opens.
Can I restrict printing or copying?
Yes – set permissions to block or allow printing, text copying, page extraction, form filling etc.
What is the maximum file size?
Up to 100 MB recommended (browser-dependent; larger files may process slower).
Does protection change document quality?
No – adds security layer only. Text, images and formatting remain exactly the same.
Can I protect multiple PDFs at once?
Current version handles one file at a time. Batch protection coming soon.
Why protect PDF files online?
Prevent unauthorized viewing, copying or editing of sensitive documents like contracts, financial reports, legal files or personal records.
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Ready to Protect Your PDF?
Fast, private, free – secure documents in seconds.
Available Worldwide
Works in all modern browsers on desktop, tablet and mobile. Updated March 2026 – supports English and expanding language options.