PDF Tools
Protect PDF
Encrypt a PDF with AES-256 and granular print, copy, and edit permissions.
Drop a PDF to encrypt
PDF, application/pdf · up to 100 MB
Features
Built for real work.
AES-256 encryption
Modern encryption trusted by every major reader.
Fine-grained permissions
Restrict printing, copying, editing, and annotations independently.
Owner password support
Separate owner key manages permissions without unlocking the document.
How it works
Three steps, no friction.
- Step 1
Upload
Drop the PDF you want to secure.
- Step 2
Set password
Choose a user password and pick which actions are allowed.
- Step 3
Download
Get an AES-encrypted PDF ready to share safely.
Benefits
Why teams choose WebRul.
- Ship confidential documents without leaking sensitive content
- Meet compliance requirements that mandate password-protected PDFs
- Prevent accidental copy/paste of proprietary text
FAQ
Questions, answered.
Which encryption is used?
AES-256, the strongest algorithm supported by the PDF 2.0 specification. Every modern PDF reader (Acrobat, Preview, Foxit, Chrome, Edge) supports it.
Can I recover the password later?
No — encryption is one-way. Store the password in a secure password manager before you close this tab.
Does the file ever leave my device?
Never. All encryption runs in your browser using WebCrypto and pdf-lib.
Related tools
Keep the flow going.
Compress PDF
Shrink PDF file size while preserving quality and searchable text.
Merge PDF
Combine multiple PDFs into a single document in any order.
Split PDF
Extract every page as a standalone PDF or split by custom ranges.
Rotate PDF
Rotate all or selected pages of a PDF by 90°, 180°, or 270°.
Need something custom?
Talk to the WebRul team about custom integrations, private tooling, or enterprise access.