security · pdf
PDF Lock
Add encryption and restrict edits with pure JS flows.
Password promptAES-256 via pdf-libOpenAI fallback
How it works
Password-protect a PDF with owner/user credentials.
- ✓Password prompt
- ✓AES-256 via pdf-lib
- ✓OpenAI fallback
Drop files here or click to browse
We process everything in secure background workers
Maximum 10 files, up to 40MB each
Frequently Asked Questions
What encryption method is used?
We use AES-256 encryption for maximum security.
Can I set different permissions for users?
Yes, you can set owner and user permissions separately.
What if the PDF can't be encrypted directly?
Our system includes OpenAI fallback to re-render and encrypt complex PDFs.
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